Chemistry mcqs test (1) For Entry Test

Chemistry Test: 1 Dr. Sajid Ali Talpur

1. The building block of matter is:a) electron b) atomc) element d) molecule

2. 12 kg of carbon represent its:a) 1 mol b) 10 molc) 100 mol d) 1000 mol

3. Which of the following is compound:a) honey b) milkc) water d) A.O.Te) N.O.T

4. Urine and blood are studied under the disciplines of_______Chemistry.a) organic b) inorganicc) physical d) bio

5. It takes part in the chemical reaction:a) electron b) protonc) neutron d) atom

6. NaCl represents one molecule of table salt:a) true b) false

7. The exponential notation form of 100.50 is:a) 1 × 10-2 b) 100.50 × 102

c) 1005 × 102 d) 100.50 × 10-2

8. What is the mass of a substance whose density is 4 kg/ dm3 and volume 2 dm3

a) 2 kg b) 4 kgc) 6 kg d) 8 kg

Chemistry Test: 2 Dr. Sajid Ali Talpur

9. H+ has:a) one electronb) one protonc) one electron and one protond) one proton and one neutrone) one electron one proton and one neutron

10. It is a form of energy:I. Light

II. SoundIII. sun

a) 1 only b) 3 onlyc) 1 and 2 onlyd) 2 only 3 onlye) 1, 2 and 3

11. Which of the following are equal by mass:a) proton and H+ b) electron and H-

c) neutron and H d) A.O.T

12. Regarding the atom all are true except:a) it is neutral b) it is destructiblec) its mass lies in nucleus d) isotopes are due to variation in protonse) chemical properties are due to valence electrons

13. Which of the following is the lightest:a) electron b) protonc) neutron d) H atomd) α-paticle

Chemistry Test: 3 Dr. Sajid Ali Talpur

Questions 14 – 18

Select from the terms below:a) boiling b) evaporationc) sublimation d) meltingd) freezing e) N.O.T

14. conversion of solid into liquid is called

15. conversion of solid into gas

16. conversion of gas into solid

17. conversion of liquid into solid

18. it’s a cooling process

19. Which of the following is the heaviest:a) electron b) protonc) neutron d) H atomd) α-paticle

20. 100.10 has significant figures:a) 3 b) 4c) 5 d) 6

21. 1.9 will be rounded off as:a) 2 b) 2.0c) 1 d) 2.1

22. Water has high boiling point due to:a) covalent bond b) ionic bondc) polar bond d) H-bond

Chemistry Test: 4 Dr. Sajid Ali Talpur

23. Find the mis match:a) α-particle : protonb) β-particle : electronc) γ-particle : neutrond) α-particle : H atome) α-particle : He nucleus

24. density of water is:a) less than ice b) greater than icec) equal to ice d) all are possible

25. 1kg iron is not denser than 1kg cotton a) true b) false

26. Which one has the highest degree of polarity:a) H-Br b) H-Ic) H-Cl d) H-F

27. Log ab =a) log a + b b) log a –bc) log a /b d) n log a

28. NaCl = 58.5 a.m.u; represents its:a) atomic mass b) molecular massc) formula mass d) molar mass

29. What is the molecular formula of a compound whose molecular mass is 28 and empirical formula CH:a) CH4 b) C2H2

c) C2H4 d) C2H6

Chemistry Test: 5 Dr. Sajid Ali Talpur

30. 24g of carbon contain _____atoms of carbon:a) 6.02×1023 b) 2×6.02×1023

c) 12×6.02 × 1023 d) 24×6.02 × 1023

31. What is the empirical formula of ethane C2H6

a) CH b) CH2

c) CH3 d) N.O.T

32. Limiting reactant determines the amount of product to be formed:a) true b)false

33. How many particles are there in 36g of magnesium:a) 6.02 × 1023 b) 9.03 × 1022

c) 90.3 × 1022 d) 12.04 × 1023

34. The reaction will go forward if product/reactants(initial) is:a) less than Kc b) greater than Kcc) equal to Kc d) All are possible

35. What is the activation energy of a reaction whose internal energy is 5 J and threshold energy 12 Ja) 5 J b) 7 Jc) 17 J d) 60 J

36. The equilibrium of the reaction 2NO + O2 ↔ 2NO2 is not affected by:a) increase in temperatureb) increase in pressure c) catalystd) N.O.T

Chemistry Test: 6 Dr. Sajid Ali Talpur

Questions 37 – 46

Select from the terms below:

A) Endothermic reaction b) Exothermic reaction

37. Respiration is:

38. Bomb blast is:

39. Decomposition reaction is:

40. Photosynthesis is:

41. Bond formation is:

42. Bond breaking is:

43. Freezing is:

44. Evaporation is:

45. Melting is:

46. Combustion is:

47. Regarding 2 g of hydrogen gas all are true except:a) contains 6.02 × 1023 moleculesb) molecular massc) one mole d) 22.4dm3

e) N.O.T

Chemistry Test: 7 Dr. Sajid Ali Talpur

48. All of the followings show red color in the acidic pH except:a) methyl orange b) litmusc) Phenolphthalein d) universal indicator

49. Which of the following solution has high pHa) water + NaCl b) water + NaOHc) water + HCl d) water + milk

50. Oxidation number of all the elements in the free state is:a) 0 b) -1c) + 1 d) -2

Answer Key1 B 2 D 3 C4 D 5 A 6 B7 C 8 D 9 B10 C 11 A 12 D13 A 14 D 15 C16 E 17 D 18 B19 D 20 C 21 A22 D 23 D 24 B25 B 26 D 27 B28 C 29 C 30 B31 C 32 A 33 C34 A 35 B 36 C37 B 38 B 39 A40 A 41 B 42 A43 B 44 A 45 A46 B 47 B 48 C49 B 50 A

Chemistry Test: 8 Dr. Sajid Ali Talpur

By the same Author:

Success tips by Dr. Sajid Ali Talpur

Chemistry definitions

Physics Definitions

Definitions and MCQs on branches of Biology

Ninth Class Chemistry MCQs

Ninth Class Biology MCQs

Scientific Biological Reasons

Definitions, Scientific Reasons and MCQs on Chemistry

Skeletal muscles Physiology BCQs

Chemistry Test: 9 Dr. Sajid Ali Talpur

Biology MCQs test for entry test

Cardiovascular system anatomy quiz

Lower limb anatomy quiz

Lower limb Anatomy MCQs

Spiritual successful life quotations

Islamic poetry and quotations (video)

Love the Prophet Muhammad (s.a.w)

Quotations on the Prophet Muhammad (s.a.w)

Chemistry Test: 10 Dr. Sajid Ali Talpur

Chemistry Test: 11 Dr. Sajid Ali Talpur