chemistry 10th mcqs

8/7/2019 Chemistry 10th MCQs

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PAPER CHEMISTRY CLASS-- X UNIT 01

Name of student Marks Obtained

Subject teacher: Afzal Qureshi

Q.1 Encircle the correct answer.

1. T w|z jA[AbA {x xvxtzx y w|xtx wx xtx |vv w

16.02 g/mol 18.02 g/mol 20.02 g/mol 22.02 g/mol

0.9168 g/cm3 0.9997 g/cm3 0.9970 g/cm3 0.9980 g/cm3

1.33 , 2.33, 3.33 4.33{x t|{ tx y xt tx | t| wx Sodium chloride Calcium chloride Magnesium Chloride Aluminum chloride

era Malaria

60% 70% 80% 90%

2. jtx {t t| wx| t 1.98C 2.98C 3.98C 4.98C

3. [wzx u |{ Blue flame Red flame Yellow flame Golden flame

4. jtx {|v{ vx x t | vtxw Soft water Hard water Natural Water Heavy water

5. `t t y tx |6. Wx| y tx t EHV |7. gt t y tx xx {x xt{ | tu@@@@@ u|| vu|v

xxA8. g9. gtv{t yx vtx Chol Blindness Typhoid


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10.

450 million 500 million 550 million 600 million

g{x ux y xx { yyx y tx uw|xtx |

w t ux | |w xxtx vx {x | y x{ x {xx txy{x y | vxt tw y

4 50% 60% 70%j{|v{ y {x y|z | {zv|v vwR x | {x

P Electrons Measons Neurons

{ y | w | ux | txRr

O Nitrogen carbon Hydrogeng{x t y xt{? {|v{ vx |{ tx? |

11.

Terbium Protium Deuterium Tritium

[xt tx | xw y {x xtt| y12. [ zx v |y|xw tw |y|xw t -73C 73c 273C 373c13. g wv tx y | t xHydration Dehydration Dehydrogenation Hydrogenation

14. g xvxtzx w: t {|v{ tv~tx |

0%

15.

Sodium nitrate Fused Calcium chloride Quick lime Calcium carbonate16. \ vxt xtv? [xt t xw w

xv|Arotons

17. j |v{ y {x z v Campho Caustic soda Ammonium chloride Urea

18. Tvvw|z v|x| {x tw {x t tx vxwtzx yxygen

19.


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One third One fourth Two third Three fourth

20. Ux|wx vtu? tt zt tw xx vt|n

Nitrogen Oxygen Hydrogen |

Iron oxide Zinc oxide Chromium Nickle

24 xvx | {x vt y Ut| {w|wx 5 7 8 24

25 j{|v{ y {x y|z x{w | xw xx xt

Boiling Chlorination Clark's method Ion-exchange method

26 y {x y|z vw | xw xxt {twx ytxRe Quick lime Washing soda Caustic soda

27 z vw | xw xxtxR

Slaked lime Quick lime Washing soda Caustic soda

Hydroge Nitrogen Oxygen Chlorine

21. c|| y {wzx | {x x|w|v tux |first Second Third Fourth22. g{x tuwt xxx | {x |xxR Carbon

23. j{|v{ y {x y|z utvx | xw t vtt{wzxt| vxR. aux y tx tx.

{tw x y txR. j{|v{x

Slaked lim

. j{|v{ y {x y|xtx {twx y


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28. j{|v{ y {x y|z tv|w | xw | {x xtty {wzxR

|

g 85 87 88

30 || y tx xvx z|x {wzx twx tE

HN03 H2SO4 HCl H2029. {x xvxtzx t y tx | {x |~ |

86

. g{x wxvz CCCV

0.1% 0.3% 0.5% 0.7%


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1. CACK8 y xt{: v | | {x y y. Carbon Sulphur Silicon Hydrogen

2. j{|v{ y {x y|z | t y y vtv| vtutxR Chalk Quick line Limestone Marble

3. g vw y vtu ut|xw y t tw t|t |z|xx vtxw{x

America Australia Brazil Newzeland

2.53 g/cm3 3.53 g/cm3 4.53 g/cm3 5.53 g/cm3

tReducing agents Oxidizing agents Inorgainc compounds Organic compoundstu {tTwo all pic forms Three allotropic forms Four allotropic forms Five allotropic forms

Lead bl Charcoal

Amphoteric-compounds Inorganic compounds Organic compounds Hygroscopic compound

4. Tu {wxw xt tz v{x| w||wxw {x vw | Two groups Three groups Four groups Five groups

5. \ {|v{ y {x y|z v|x w|tw | ywA6. g{x wx| y w|tw |7. V u | t xx|t v|x y t8. V

otro

9. Zt{|x | t vtxwack Carbon black Coal


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10. \ {|v{ y {x y|z v|x | Zt{|x ywttR

Canada Srilanka America England

11. Zt{|x | vxw y x Sodium Calcium Sulphur Carbon

12. g{x v y Zt{|x | Blackish brown Crimson red Blue Golden yellow

13. T x z y t|v y y Vtu w|vxxw |1970 1975 1980 1985

14. T|y|v|t W|tw xx y| wvxw | 1950 1955 1960 1965

Coal Charcoal Bucky balls Graphitet{|x Black pigment Red pigment Yellow pigment Blue pigment` v{ t y vtu |wx | ytt t|R 0.5% 1% 1.5% 2%

O Fourt ur r u zAIon

{t w t t|zSil

15. T|y|v|t w|tw tx twx y16. Z | xw t t17.

18.

ne Two Three

g{x txv y vtu |19.

ic Covalent Coordinate covalent Hydrogen

V u y v w r w|20. V vt t utv~ tx ut| xw u {xica gel Olivine Inorganic compounds Organic compound


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21. Vtu | xw t t Fuel Drying agent Reagent Catalyst

22. Vtu | xw | {x xtz t t Reducing agent Oxidizing agent Drying agent Reagent

23. f||v | xw t t Conductor Semi-conductor Non-conductor None of above

24. g{x x|z | y w| ||vtx |1090C 1190C 1290C 1390C

25. fw| ||vtx w|x | { tx y |v ||w vtxw Silica gel Olivine Mica Water glass

asbestos talc feldspar silica gel

Nitric acid Carbonic acid Sulphuric acid Hydrochloric acidfwt tx w|~ vt|carbon monoxide carbon dioxide silicon dioxide ammonia gas

{xt|zCarbon Sulphuric acid Hydrochloric acid Nitric acid

1. 2.2 gc 4.2 gcm-3t t

26. j{|v{ y {x y|z | xtx y ||vt |xtR27. Vtu |wx | ut|xw u {xt|z y|v tv|w t|vtv|w |{ vvA28.

29.

ic acid

j{|v{ y {x y|z tv|w | tux tw wxvx |z{

30.

2 gcm

g{x wx| y zt{|x |-3 m-3 3.2 gcm-3

31. Z {|x |


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no tor conductor none of the above

no conductor none of the abovet y ||vt | S Si06{x {wtxw y u t|z HCl HN03 H2CO3 H2S04

35 x vu| u u | t| blue flame yellow flame golden flame green flame

36 v{ xvx y xt{: v | twx y ||vtx v~R

n one thousan than tw thous more than four thousand

| | ||v vu|x |{ zx bla

40 t |rrrr vt|x yA

n-conductor semi-conduc

32. W|tw | tn-conductor semi-conductor

33. g{x x||vt yi02 Si04 Si03

34. f||v w||wx vt ux ut|xw |w| ||vtx |{ vvA. Vtu |wx w|{ t. [

80% 85% 90% 95%

37. [ t ||vtx |xt tx ~Rmore tha d more o and more than three thousand

38. f||v | tux 1610C I710C 1810C 1910C

39. j{x {xtxw z ty ||v w||wx {|v{ | t

ck solid yellow solid blue solid white solid

. f||v w||wx vv tone two three four

41. g{x x|z | y ||v w||wx | tu


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1300 1400 1500C 1600CC C ric acid ic a d ic aci ic acid

ex y y ||vtR

e alite ar

oxygen gas chlorine gas carbon monoxide gas carbon dioxide gas

silicon olvine silica gel water gas

1

42. f||v w||wx | |ux | t tv|w xvx hydrochlo hydrobrom ci hydroiod d hydrofluor

43. g{x {x tx y ||v w||wx | silica silicic acid silica gel none of the abov

44. j{|v{ y {x y|z | {x vt| onyx Jaspar quartz flint

45. j{|v{ y {x y|z | @vt|x y y ||vtR Quartz Tridymit Crystob Jasp

46. j{|v{ y {x y|z zt | xw {x y|xR47. j{|v{ y {x y|z {t w|tw |~x vx48. g{x ux y xxv | {x txvx {x y vtu tw ||v

| 2 3 4


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1. g{x t|v ux y |zx | 5 7 9 11

2. g{x t|v t ux y |zx | 10 12 14 16

3. T| vt| JK8 u x y carbon oxygen nitrogen hydrogen

4. g ux y vtx uw yxw u |zx | | vg{x ux

{x w | one two three four

5. y xxv | {x txvx {x y |zx |

Ionic covalent coordinate covalent none of above

7. w ||wx | {te| |z tx | y

taCE tw4CI KCl NaCl CaCl2

9. tw xvtx t

two

6. a|zx vu|x |{ xt t ||wx | tw z|xrrr three four fivevw\ ||v v -1 charg -2 charge -3 charge -4 charge

8. a zx | ut|xw | tut u ta NHa|zx xttx


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-190C -192C -194C -196Cy {x wv| y |z{

11 |t | xtxw | tut u {xt|z t |x y

12 z zt | xw | |z y| tw w |~Aid

14 [tux t ttwxw ux |x | v{x| | -1916 1918 1920 1922 {w|wx

| t16

cooling agent drying agent oxidizing agent reducing agent

Open hearth process Heber's process Froth Flotation process

10. \ | xw |wx |x t{xxuuA nitrogen gas oxygen gas chlorine gas hydrogen per oxide gas

. Tt| v{|wx tw slake lime lime stone caustic soda washing soda

. j{|v{ y {x y| carbon diox e carbon monoxide chlorine nitrogen gas

13. b vxv|t vtx? [tux: vx | xw | {x xtt|y ammonia gas Nitric acid chlorine gas oxygen gas

.

15. T|t w|x | tx z|x t|{|v{ weak alkali strong alkali weak acid strong acid

. T|t | xw t t17. T|t | xw y {x xtt| y t{|z wt u

Solvay process

18.

80C 82 C 84C 86C

g{x u||z | y ||v tv|w |


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19.

1.50 cm

g{x wx| y ||v tv|w |g

-3 1.56 gcm-3

20. zxt | y v{xAhlorine gas hydrogen per oxide gas{ zx{x

t| |tx tw vvA carbonic acid hydrochloric acid hydrofluoric acid

22 v tv t t23 xw zx u wxv|z?

water carbon dioxide mercury oxide hydrogen per oxide {x x {x y zx | 3 4 5 6 x y

xA3

26 {x xvx zx y z u | t| |27

-181C -183C -185C -187C

29. {x x| zx | xt {

-3 1.52 gcm-3 1.54 gcm

ammonia gas nitric acid c

\ | xw t t x xx {x y x 21.

sulphuric acid

a||v tv|w | xtxw | tut u xt|z

. a|| |w | xw laboratory reagent cooling agent drying agent catalyst

. ]x{ c|x w|vx24. g{x ux y xxv |25. j{|v{ y {x y|z tv|w | xw | {x tytv

yx|| HN0 ' HCl H2S04 H2C03

. g t t x x 11% 21% 31% 41%

. g{x u||z | y zx |28.

-220 C -225C -230C -235C

g{x yxx|z y zx |g w y xt t y


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air Nitrogen gas hydro

30. j{|v{ y {x y|z vtt gen gas carbon dioxide gas| xw | {x tut

-1/2 -1 -3/2 -2

33 |z zt | xw wxw xx2 2 2 2

ge bo hur rogen

|s low gas | t |wx |

C C C Cx w||wxw | s

ee groups s s ps

xtt| y zxA MnO2 Fe2 O3 Al2 O3 Ni

31. \ x |wx {x txvx ux y zx | -1 -2 -3 -4

32. \ x |wx {x txvx ux y zx |. j{|v{ y {x y O2

34. bx | t t|v y y CO H O N oxy n car n sulp hyd

35. g{x ux y t y zx | x xvx 3 4 5 636. bx | yt|

blue gas green ga red gas yel

37. g{x |wt| ux y zx -1 -2 -3 -4

38. g{x u||z | y {wzx x|wx | 40 42 44 46

39. at |wx t two types three types four type five types

40. b|wx tx vt|y|xw | thr four group five group six grou


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41. bzx tw tvxxx u |{ t blue fla yellow f red flam golden flameme lame e vu|x |{ zx z|x

|w |C 2100 C---2600C 2700 C---3200C

43

six layers

44

s

45 y {x y|z xxx | xw t vtt | {xri Florine

46 x | t t x|z{ilometers

47

m

48 j{|v{ y {x y|z | xw x||x t| | tz{x {xR ozone hydrogen per oxide oxygen chlorine

tw {x xxtx xtv{x

50. g{x vtt xw | {x |w|t xtt| y ||v tv|w | Gold Nickle Chlorine Platinum

42. g{x xxtx t {|v{ |zx||v x 900 1400C 1500 C---2000C

. g{x t{xx tw | w||wxw | three layers four layers five layers

. j{|v{ y {x y|z tx | vx xt{ tropo phere stratosphere Mesosphere thermosphere

. j{|v{ wxv|| y xR chlo ne Bromine iodine

. b xx | {xx t { tu 28 kilometers 32 kilometers 36 kilometers 40 k

. g{x vvxt| y x | ft{xx | 5 pp 10 ppm 15 ppm 20 ppm

.

49. T |x y zx tw tvxxx u |{ t x { ytx 3000 C 3500C 4000C 4500C


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51. g{x xtx y t{x|v |wx | Na2 O2 BaO C3 O2 Al2 O3

ZnO BaO2

53 |wx |52. g{x xtx y u|wx |

C302 Al2O3

. g{x xtx y x K20 H2O2 KO2 C3O2


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Subject teacher: Afzal Qureshi 0345- 73 66 73


1. g{x t|v ux y { | 12 14 16 18

2. g{x t|v t ux y { | 30 32 34 36

3. g{x xvxtzx t y { | xt{: v | 0.1% 0.2% 0.3% 0.4%

4. \ yxx tx { | yw | `x|v tw The United state Norway England India

5. \ t~|t x wx| y t|x { vv | ~{|@fttwM

c Murree Kallat Multan . Quetta{x 2 3 4 5{x Sulphur Chlorine Iodine Bromine{x v y vt y {u|v { |M

Bright blue Bright green Bright red

9.

6. g t| t|v y y { txM7. g xxx yw | |? zt|v? tw |? xzz tw x|

|8. g

Bright yellowg{x tux tx y { t xxtx |M


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M clinic sulphur Rhonjbic sulphur Plastic sulphur none of above

10. g{x ux y xxv x|xw { | vxx |ono x 2 3 4

11 {x {tx y vt y {u|v { |Mhedral Octahedral Trigonal Decahedral

2 2{ |MC C

cm3

m3

cm3

m3

M9C 67C

|M|wxxw ux t x

19 y { |M

{x | 1

. g Tetra

12. e{u|v { | ux |M C02 CO CS H S

13. g{x x|z | y {u|v 110

14. g{x wx| y {u|v { |MC 113 116C 119 1.08 g/ 2.08 g/c 3.08 g / 4.08 g/c

15. `v||v { | tux uxxx 72C 95C 96C 11 120C 143C 144C 1

16. g{x wx| y v||v { |M 1.98 g /cm3 2.98g cm3 3.98 g/cm 3 4.98 g/cm3

17. g{x x|z | y v||v { 96C 113C 116C 119C

18. j{|v{ y {x y|z | zxxt vtx y {MPlastic sulphur Monoclinic sulphur Rhombic sulphur None of above

. g{x u||z | 244.6C 344.6C 444.6C 544.6C


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20. g{x v y t|v { |M amber brown yellow red

21. g{x x|z | y t|v { |M 113C 119C 131C 141C

metal non-metal metaliod none of aboveg{x xvt yt y { v{|wx |M2 2 2 14 S4CI4 S8C14{x u x { |M

25 {x t vx xw

|}xv|z vxxwA

rocess Haber's process Froth flotation process

28

O H2S2O7

29

r sweet

30

88g/ cm"3 1.92 g/cm"3

22. f{ | t23.

S C1 S C

24.

4 5 6 7

g x y xxv | {x {x y . g Y v{ | |x Sulphur Aluminium Gold Silver

26. \ Ytv{ vx x { | yvxw {x ytvx u air oxygen gas nitrogen gas carbon dioxide gas

27. cx {|v tv|w | wvxw uContact process Frasch p

. g{x xvt yt y x | H2S 4 H2SO3 H2S08

. g{x tx y [EfbG |M bitte sour salty

. g{x wx| y [EfbG | 1.80 g/cm"3 1.84 g/cm"3 1.


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31.

5C 10C 15C

g{x yxx|z | y [EfbG | 20C

138C 238C 338C 438C

hydrochloric acid nitric acid sulphuric acid hypochlorous acid

34. g{x vx y xt y tx y zt | ~ tMydrogenation dehydrogenation

35

36 t |M% pure

37 |v t y | x t u t v|x|M Haber

38

0

39

o odine Sulphur

40. \ | xw | {x tytvx y x|x? y|x ~? tv{x

r203 Fe203 V205

32. g{x u||z | y [EfbG |33. jtx | xt |

hydration dehydration h

. g{x v y vx {tx xt{wtx |M red green blue yellow

. f { ut|xw u Y v{ x{w 98.0% pure 99% pure 99.5% 100

. f { tv|w | xtxw { ut Al-Razi Jabir-Bin-Hayyan Herman Frasch

. Yt y X t | MgS 4.7H20 BaS04. 7H20 CaSO4. 2H20 ZnS04. 2H20

. g{x xxx xw | {x |y|vt| y uw |M Hydr gen Chlorine I

tw z wx Calcium Cadmium Sulphur Potassium

41. g{x vtt xw | {x tytvx y [EfCG |M ZnO C


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42. g{x tv|w xw | xt|z t|vx y xxvt|z twxtx|z |

43. `v||v { | tux uxxxM 120C143C 144C 167C 168C191C

44 { { y | | | x y txy {M

45. bx xvx y {|v tv|w wvxMns three hydrogen ions four hydrogen ions five hydrogen

46

white

47 G xtv

3 Ar C02

49

50 cx { | xtvxw u |zMta hod

HC1 HN03 H2S04 HOC!

96C119C

. j |v {x y z t| x tx 92C 96C 100C 104C

two hydrogen io

. g{x v y vx {tx xt{wtx |M. blue yellow red

. j{|v{ y y|z | ut|xw {x vvA [E fb|{ x{ tv{A Ethane Ethene Ethyne None of above

48. g{x utvx xw t t xxvx | xtw tvvt |M H2S04 NH

. Tv|w xw | {x tytvx y |zx |M HCl' HNO3 H2S04 CH3COOH

.

Con ct process Ostwald's method Haber's method Frasch met


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PER C EMISTRY CLASS-- X UNITPA H 05

Name of student

Subject teacher: Afzal Qureshi Marks Obtained


1. g{x ux y xxx | {tzx yt| | 3 4 5 6

2. g{x xvxtzx t u x|z{ y w|xw v{|wx | xttx |1 % 2 % 3% 4%

3. V{|x | yw | {x y y v{|wx y w|? t|?vtv| tw Magnesium Sulphur Carbon Phosphorous

4. g{x v y v{|x | yellow greenish yellow green blue

5. g{x tx xxx y {tzx yt| | bromine iodine fluorine astatine

6. g{x tw|tv|x xxx y {tzx yt| | astatine chlorine bromine fluorine

7. Uxtv{|z wx | xtxw u ||z v{|x |{ slake lime quick lime caustic soda baking soda

8. V{|x | xtxw u {x xxv| y t tx | y calcium chloride sodium chloride magnesium chloride potassium chloride

9. W|z {x |w|t xtt| y v{|x {x | uxvx ut|vwx yt| y


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potassium hydroxide sodium hydroxide calcium hydroxide magnesium hydroxide| x |-36C

102 8C

12. g{x tx y {wzx v{|wx |our

13. g{x u||z | y {wzx v{|wx | -85C -90C -95C

14 {x tv{| z reen

15 x v{|wx xtv |{ t xt {xt|z chlorine gas carbon dioxide gas

16 {x xx x vx y ux z wx |hlori fluorine

17 v u x x |z{ ydrog | |

5 6 7

x {x |

10. g{x u||z | y v{ -32C' 34C -38C

11. g{x x|z | y v{|x | - C -104C -106C -10

s bitter sweet salty

-80C

. g v y ux wx | g ish white bluish white yellowish white greenish yellow

. [wz|uxtx hydrogen gas oxygen gas. g x xw | { tyt tv{| c ne bromine iodine

. \ xt |{ vt |wx | { xvx ywvx {zxx zt h en chloride gas chlorine gas oxygen gas hydrogen gas

18. g{x ux y xxv | {x txvx {x y {tzx yt 4

19. g{x ux y xxv x|x {tzx yt| vxx


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1 2 3 4

20. g{x yt y {zxx zt | PC6 COCl

HOCl CaCl (OCl)

21

VII

22 {x xv t y x | CaCl (OCl)

23 x v{| x tv v x | y nitrogen gas

a hane hydrochloric acid

xw y {x |y|vt| y txhur phosphorous Hydrogen chlorine

white bright yellow silver

27. V y |x u|wx |28. V y |x |w|wx |29. g{x yt y uxtv{|z wx |

Ca(OH)2 CaCl(OCl)

30

2

. Tt|x uxz {|v{ z y x|w|v tuxR IV V VI

. g t y f{ v{|w PC6 COCl2 HOCl

. U t z w x |{ t v txw t|t z|x oxygen gas chlorine gas hydrogen gas

24. \ xtv |{ v{|x y y v{y meth ne chloromethane dichloromet

25. j{|v{ y {x y|z xxx | Sulp

26. V y |x v{|wx | pale yellow

pale yellow bright yellow white silver

pale yellow bright yellow white silver

COCl2 HOCl

. g{x yt y v{y | CaO CaC(OCl) CHCl3 CH2Cl2


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PA HPER C EMISTRY CLASS-- X UNIT 06


Subject teacher: Afzal Qureshi 0345 73 666 83


aluminum copper iron silver|v{ xxx vwx xt|

u

4. { { z | xx x ux t|5. t y

Cu A1 Sn Ni

Bronze Brass Nichrome bauxite

Nichrome Bronze Brass Gange| xIt is used to make medals and coins It is used to make decorative articles

ck de yrvxw |

process rnace rocess

1. j{|v{ xt { {|z{ xyxv|2. j{

iron aluminum copper silver

3. j{|v{ xxx | x v sodi m phosphorus silver zincj{|v | yxw u ||z w|yy t | |t mixture element ore alloysUt | t z

6. Wx x|z |? | | xt x7. j{|v{ x y {x y|z | xw | xxv|v {xtx8. j{ v{ txx | x y U

It is used to make lo s and keys It does not corro

9. T || |A t xtvxw Bauxite cryolite flourospa kaolin

10. Zw t| xx | w open hearth thermite process blast fu Halls p


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11. g{x vx y xtz v| y y|z x x | x@xt tw {x |

tal

13. g{x xt | xtvxw y | gangue ore alloy element

14. \ {x x|w|v tux xt tx one third two third one fourth two forth

15. Y|z vx | xw | |vxw|t uu electrolytic chemical thermite fission

16. j{|v{ xxx | xw t~x txtx tw x{|vx. iron alluminium silicon zinc

17. j{|v{ xt | x |z{ iron copper aluminium chromium18. b|wx y w|yyxx xt tx {xtxw |{ t|| |

thermite process Hall's process oxidation reduction

19. W|z [t: vx { t xvx x t|| |ut|xw 90.5 95.5 98.5 99.5

20. g{x xxtx y xxvx w|z [t: vx 900C 940C 920C__960C 940C___980C 930C___ 970C

21. j{|v{ x | t yw t ||vtx |wxR sodium calcium Iron aluminium

two three four five

12. T x v| y | non me oxides gangue slag


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22. g{x yt y vw | A1203.2H2O A1 Na3Al O M

aolin Cryolite Bauxite Diaspore tyxxw r aceM

anc elspar | wx|xw t

xyrite lphate rate sulphide

Th of b

99.7% 99.8%

28 x w {|wx u xx02 non of these

29 x y |z { tRilver

30

FeO and Cu2S

31. [ t xvx t xw| xx vt| vtu% 0.4%__0.8%

R

203 F6 Al2O3. H2

23. \ ct~|t t | | t ut|xw y K

24. `tx ut|xw y ut ytvx |Bessem

25. Vx | t ut|xw yer converte Siemens regenerative Blast furn Chromite Copper gl e Potash Mica Potash F Chromite

26. W|z exy||z x vx Cathode anode bottom surface

27. W|z xy||z y vx {|v{ | | xw txxv Copper p Copper su Copper nit Copper

e purity lister copper is

99.5%' 99.6%

. V |w t v v |x C S02 02

. j{|v{ x y { | ~ t |x x s copper cuprous sulphide cuprous oxide

. etxw x | xxw tz |{ {x |x y Coal and oxygen Coal and sand CO2 and CO

0.2%_0.4%

32. j{|v{ xx | xw xtx tw u 0.4%__0.6 0.2%__0.6%


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silicon-steel medium steel high steel

33. Zw t| xx | xtxw u mild steeln

2

ne steel medium steel chromium steel nickel steely xxl steelx {x{ vx tyx xx

ute utes s inutestzorus

ox e carbo ate|x | |wvxw | {x ytvx

cwv| y VC y vtu tw zx | t xtx y{x

ction exothermic reaction neutral reaction none of these'

42 z x | z | z|z uty { ztx y| xx

Ope Hearth process blast furnace Reverseberatory furnace Jugging

34. a|v~x xx vt| |v~x 4%_ 0% 4%_30% 4% __40% 4% --50%

35. j{|v{ | vtxw t|x xx silico

36. j{|v{ x y {x y|z | t high ste

37. W|xv| y ztx | v{tzxw |e nickel steel mild steel medium twenty min s Thirty min forty minute forty five m

38. j{|v{ {|z | xw {x | {x xtt| y Gangue oil flurospar phosph

39. Vtv| |wx | ut|xw u {x wxv|| y carbon carbon mon id calcium n calcium

40. W|z xtv| y |y the bottom the top the left side the both side

41. E

endo thermic rea

. W | tv| y ? yt| x tw


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near the base in the middle near the top only at right side

43. [ t xvx xx vt| vtuR 0.050.2 0.030.3 0.010.2 0.02 0.5 x | tx |x x |

45 t t| |4

46

Cu20

47. j{|v{ x y {x y|z | t x y t||Rchite

48. j{|v{ x y {x y|z | yw t V{tz{|49. `xt {tx xwxv

gain electron share electron none of these

50

als

rd

44. Uxt~|z y v~ tw tzxvtxw mining crushing Grinding Jugging

. Y y {tx x Fe30 Fe203 CuFeS2 Cu20

. j{|v{ x y {x y|z | t yt y vx|xR Cu20 Cu2S CuFeS2

bauxite copper glance magnetite mala

magnetite haematite Limonite iron pyrite

lose electron

. g{x| x|z tw u||z | tx t {|z{ non met elements metals metaloids

51. [ t xxx y x|w|v tux tx xtR One thi two third three forth one fifth


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PER C EMISTRY CLASS-- X UNIT 07PA H



Q.1 ir

Mu C

1.{ {x| xx

xmain groups five main groupst |M

1820x t|v utvx |M

an ch

an chemist Sweedish chemist French chemist Chinese chemist

t x 10 mg to 15 mg 20 mg to 25 mg 30 mg to 35 mg 40mgto45mg

7. vxv|x xux | t {z x|x w|yyx | {x|xvt yt uM CH . CH2 C2H2 CH3

Enc cle the correct answer.

ltiple hoice Questions (MCQs):

\ DK vx? utxw |z|? {x vw w||w w |M two main groups three main groups four

2. i| yvx {x t ytw 1805 1810 1815

3. Y| w|v{ {x {x|xw xt y |z 1822 1825 1828 18301

4. i|t yvx {x t xxxw u tM Germ emist Sweedish chemist French chemist Chinese chemist

5. Y|xw|v{ j{x t tM Germ

6. g{x t y xt xvxxw {z{ {x |x y t wt| |Mg{x


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8. g{x vxv|x xux | t {z x|x w|yyx | {x|

xvt t uM

CH2n.2 CnH2n+i

10 T~xx yt| tx xxxxw u {xi

MH2n+i

xw |Mups oups five groups

rd rd ese word

two groups three groups four groups five groups

two groups three groups four groups five groups {|v{ {tx t vtu@vtun

14 Units 15 Units 25 Units 27 Units

9. g{x xux y T~tx yt| tx xxxxw u {x ytM CH2+2 CH2n

. g{x xux yytM CnH2n+2 CnH2n CnH2n-2 CnH2n+

11. g{x xux y T~x yt| tx xxxxw u {xyt CnH2n+2 CH2 CnH2n.2 Cn

12. [wvtu tx vt|y| two gro three gr four groups

13. cttyy|? xt|z |x tyy|| |M Latin wo Greek wo English word Chin

14. httxw {wvtu tx vt|y|xw |M15. T~tx tx vt|y|xw |M16. g{x ttxw {wvtu

|zx uw tx vtxwM alka es alkenes alkynes alkyls


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17. g{x ttxw {wvtu {|v{ {tx t vtu @ vtuwux uw tx vtxwM alkyls alkanes alkynes alkenes

18. g{x ttxw {wvtu {|v{ {tx t vtu @ vtu|x uw tx vtxwM alkyls alkanes alkenes alkynes

19. Xtv{ [ @ V @ [ uw tzx | x{tx |M 104.5 109.5 114.5 119.5

20. g{x x|z | y x{tx |M -163 C -173 C -183 C -193 C

21. g{x u||z | y x{tx |M -142 C -152C -162 C -172 C

22. g{x x|z | y x{xx |M -139 C -149 C -159C -169 C

23. g{x u||z | y x{xx |Mi -74 C -84 C -84 C -104 C

24. X{xx | t ttxw {wvtu |{ x vtu @vtuM Single bond Double bond Triple bond None of above

25. ct|v |~x x{xx tw ciV? xv tx tytvxwyM


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ethane ethane ethyne butane

300 BC 400 BC

Berzellius Haber Herman Frasch Friedrich Wohler|xw yM29. Yv|t z y tv{ |M

X C OH None of above

None of above

31 |t y ~ |M32 g{x v{ttvx y x{tx zt |M

f above| |x|z y y| twzxtuxR

Ethene Chlorine

35 {x y|z ztx {t yt| xx wR

26. V{|xx xw xx t t yx t xt tM 100 BC 200 BC

27. j{ w|w x}xv |t yvx {xR28. bzt|v vw tx ut

Plants Animals Plants and animals None of above

OH

30.

OH X C OH

Yv|t z y vtu|v tv|w |M. Y v z t {t|wx OH X C OH ' None of above

.

acidic basic neutral None o

33. j{|v{ y {x y|z ztx | xwx Methane Ethane

34.

methane ethane ethaene ethyne

. j{|v{ y g{x zt xw t t zxxt ttx{x|t |M

methane ethane ethene ethyne


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36. j{|v{ y {x y|z zt|v vw? wx {|z{ xtw :xxtx x|

xx {xxR

a ethyn

ne ethene ethyne

38. y tt zt x|txw tu EHFAG || 1956 1960 1964

39 j{|v{ y y|z utvx wx zx tww|| xtv|M. methane ethane pFopane ethyne

40.

CO41 {x tv| wx | |x x{|

bitumen

42. g{x ytv| y vwx | xw | {|? {xt|z t tw xbitum napht

43. j{ xw xx t yx t xt t ECC UVM

meth ne ethane ethene e

37. g{x zt ut|xw u {x tv| y tx vtv| vtu|wx |M methane ethaT u|z wx|vu|v yxx t w|vxxw | Utv{|t |M 1952

.

g{x v{x|vt yt y xt | KCNO NH4CNO NH4NO3 H2N- -NH2

. g y y v xw w vx |M gasoline naphta petroleum gas

t| |M petrol en a fuel oil


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F Ni

45 {x tv| wx | tw tx y y

diesel oil naphta gasoline bitumen

-60 C -65 e -70 C -75 C

47. g{x x|z | y x{x |Mtvx tuxM

49. `t} | y tt zt |M50.

C2H6

Chinese Japanese Americans Greeks

44. g{x vtt xw | {x {wzxt| vx |Me203 Pt H3P04

. g y y v xw t tw tw |x |M

46. g{x u||z | y x{x |M

-52 C -62 C -72 C -82 C

48. \ xy||z vx? {x | | {xtxw | t xxv|v y 100C 200 C 300 C 400 C

ethane propane methane etheneg{x yt y uxxx |M C2H2 CgHe C2H4


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PA HPER C EMISTRY CLASS-- X UNIT 08




g blue Whiteg{x x|z | y atb[ |g

g3 4.13g/cmg{x vw xw | {x xtt| y t |

NaOH Ca(OH) Al(OH)g{x vw xw | {x tytvx y t|y|v|t |~ |KOH 2 Mg(OH)2farth process otation process ess Sog

en carbo ammo chloringNa2C0 NaHC NaNO\ t ux t~x t t xw|v|x y {x xt y tv|w| | {x tv{ |

NaOH. Na2C0 NaHC0 NaNO,

atEVCF y t u xtv|z |{ tv|w |{ {x x| yA oxygen carbon monoxide carbon dioxide chlorine

{x v y atb[ | black yellow

118 C 218C 4 318C 418C

{x wx | y atb[ | 1.13 /cm 2.13g/cm 3.13g/cm3 3 3

KOH 2 3

NaOw| vtutx | twx v{|xy uH Ca(OH) Open he Froth Fl Oswald's proc lvay's process{x zt xw | {x tt| y u|x | |' hydrog n dioxide nia e{x vw xw | y|x x|z|{x | NaOH 2 O3 3

3 3 :


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j yaN03 NaCl Na2C03j{|v{ y {x y|z vw | xw t~x vt|v wt

j y vxng{x tx y w| {wzx vtutx |

j yct vt |y|xw tw

cx{xx | xtxw u {x x|t| y x{xx wx {|z{ xxt x Chlorj{|v{ y {x y|z | xw y t|y|v|t y|zA

bakelite melamine Teflon polyvinyl chloridec xartificial flooring making radio and television bodies

makin tai pens, . makin and s.j{|v{ y {x y|z | {|xR ben naphta petrol teflon

Na2S04 MgS04 BaS04 Ca S04

{|v{ {x y|z vw | xw yx {x {tw tx. NaHCO, N

Na2C03 NaN03 NaCl Nal{|v{ {x y|z | |z|t wv | tA baki g soda caustic soda soda ash washing soda

salty sweet bitter none of above{|v{ {x y|z vw | v ~ t 5x{t wt5 NaCl NaOH Na2CO3 NaHCO3|v tx |

o types three types four types five types

w | { xxvx y tvx yine Carbon dioxide Oxygen Carbon monoxide

x | xw y

g combs, foun n formica etc g rain coats hand bag

zenej{|v{ y {x y|z | twwxw {x |zx |vxtx {x| wtu||?


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j y | y w|zAsulphu lmit acid id oleic acid^ bakin oda paint Soapgxy | xtxw u {x x|t| y

styrene xylol benzyl peroxide tetra fluoroethylenej ybakelite ( xylol melamine Teflonf{t|z vxt wt | wvxw u {x t|y|vt| y zw t| y

t sodium hydroxide calcium hydroxide magnesium hydroxide potassium hydroxide{x w| {wzx vtutx | {xtxw | v{tzx w| vtutx

|hydrog s carbon monoxide gas carbon dioxide gas

xylol styrene c) Tallow glycerine

{|v{ y|z tv|w | xw | {t|z vxt xxric acid pa ic stearic acxx t x xw xtxg soda caustic s

{|v{ {x y|z | xtx y x{tx

|t yt |{j

{ {x x| yen gas nitrogen gag{x |v|t yt tx|t | t t~|z |

chemistry 10th mcqs

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