Pre-Test Exam-2022_Chemistry_MCQ_EV (Sample Questions)
Page 1 of 2
Set Code: C BAF Shaheen College Dhaka Subject Code: 176 Sample Question (Pre Test-2022)
Subject: Chemistry 1st Paper & 2nd Paper (MCQ) Time: 25 minutes Full Marks: 25
1. Screen is covered with ... in Rutherford’s particle scattering?
a. CaS b. ZnS
c. Pbs d. NiS
2. Which formula gives maximum number of electron in a sub shell?
a. 2n2 b.
c. d.
3. How much sub shell is possible for M shell?
a. 1 c. 2
d. 3 d. 4
4. Plank constant equal-
a. b.
c. d.
5. Through which postulates scientist Bohr has improved Rutherford atomic model?
i. Concept of stationary orbit ii. Concept of angular momentum iii. Explanation of atomic spectra Which is correct?
a. i &ii b. ii & iii c. i & iii d. i, ii & iii 6. For P sub shell—
i. l = 1
ii. m = – 1, 0, + 1
iii. Number of orbital is 2 Which one is correct?
a. i & ii b. ii & iii c. i & iii d. i, ii & iii
Observe the stem & answer question no. 7 and 8:
AB2(g)+ 3B2+(g) ↔2AB3(g), H = –ve
7. Which one of the following is the unit of Kp for the above reaction?
a. atm b. atm3 c.atm2 d. atm–2
8. Actions to be taken to increase the production of AB3⎯
i. temp. should be reduced ii. pressure should be reduced
iii.the supply of B2 should be increased Which one is correct?
a. i b. i & ii c. i & iii d. i, ii & iii
9. The rate of reaction of a A + dD ↔ mM is⎯
i. – 1 a . [A]
t ii. – 1 d . D
t iii. – 1
m. M
t
Which one is correct?
a. i b. i & ii c. i & iii d. i, ii & iii 10. Active mass is meant by—
i. molar concentration ii. partial pressure iii. molar mass Which one is correct?
a. i & ii b. ii & iii c. i & iii d. i, ii & iii
11. (atm)2 is the unit of Kp for which reaction?
a. H2(g) + I2(g) ↔ 2HI(g)
b. 2NO2(g) ↔ N2O4(g)
c. 2NH3(g) ↔ N2(g) + 3H2(g)
d. CH4(g) + H2O(g) ↔ CO(g) + 3H2(g)
Observe the reaction:
A + B ↔ C + 2D; H = +X
12. Which of the following is the unit of Kc for the reaction?
a. (molL−1)2 b. (mol−1L)2 c. molL−1 d. (mol−1L)2
13. What is the functional group of amide?
a. -COOH b. -CONH2
c. -NH2 d. -NO2
14. Which is the formula of vinyl alcohol?
a. CH2=CH-CH2-OH b. CH2=CH-OH c. CH3-CH2-OH d. CH3-CH(OH)-CH3
15. What is the name of the compound H2C=C(CH3)-CH2-OH?
a. 2- methyl- 2- propene- 1- ol b. methyl vinyl propanaol
c. 2- methyl -1- propene-3- ol d. 2- methyl propenol - 3
16. Which mechanism is followed in case of anti – Markovnikov’s rule?
a. Free radical b. Nucleophilic addition
c. Elimination d. Substitution )
1 l 2 ( + )
1 l 2 (
2 + 2(l+1)
nm 10 097 .
1 2 3.0108nm Js
10 626 .
6 −34 6.021024J
Pre-Test Exam-2022_Chemistry_MCQ_EV (Sample Questions)
Page 2 of 2 Read the stem and give answers to question no. 17
and 18.
A + O3⎯⎯→ B Zn/HCCl4 ⎯⎯⎯→2O X + Y;
[X is a 2–carbon compound and Y compound is a 1-carbon compound.]
17. ‘A’ compound of the stem is.
a. CH3−C CH b. CH3−CH2− CH3
c. CH3−CH(CH3)− CH3
d. CH3− CH = CH2
18. Which of the compounds of the stem give geometric isomerism?
a. Y b. B
c. A d. X
19. X + O3 ⎯→ CHO − CHO Which one is'X'?
a. Ethene b. Ethyne c Butene–1 d. Butene–2
20. Which one of the following will be discharged first?
a. Cu2+ b. H+ c. Pb2+ d. Na+ 21. Faraday's law is applicable in−
i. Extraction of metal ii. Electroplating iii. Refining of metal
Which of the following is correct?
a. i &ii b. i & iii c. ii & iii d. i, ii & iii
22. Which element is used as semiconductor?
a. Cu b. Al c. Zn d. Ge
23. How many Faradays of electricity are required to pass through CuSO4 solution to deposit 1 mole of copper at the cathode?
a. 1 F b. 2 F c. 3 F d. 4 F
24. Which one has an upper position in the reactivity series?
a. Pb b. Cu c. Ag d. Ca
25. Which metal ion will be deposited more at the cathode when 1F current is passed through — a. Zn b. Al
c. K d. Ca
