SMATEE TEST SERIES 11 CHEMISTRY

1. Benzene reacts with CH₃Cl in the presence of anhydrous AlCl₃ to form :

a) Chlorobenzene
b) Benzyl chloride
c) Xylene
d) Toluene

2. Which of the following has least boiling point?

a) n-Hexane 
b) n-Pentane
c) 2-Methylbutane
d) 2,2-Dimethyl propane

3. The principle involved in paper chromatography is

a) Adsorption
b) Partition
c) Solubility
d) Volatility

4. The species having +I effect are

a) CH₃CH₂
b) -COOH
c) -NO₂
d) CN

5. Which of the following compounds are aromatic ?


a) A,B
b) A,B,C
c) B,C
d) B only

6. For a given alkyl group, the boiling points of alkyl halides follow the order:

a) RI > RBr > RCI
b) RCI > RBr > RI
c) RI > RCI > RBr
d) RBr>RI > RCl.

7. – Alkyl halides on treatment with alc. KOH give

a) alcohols
b) alkenes
c) alkanes
d) aldehydes

8. Which of the following is most reactive towards nucleophilic substitution reaction –

a) C₆H₅Cl
b) CH₂=CHCI
c) CICH₂CH=CH₂
d) CH₃-CH=CHCI

9. The penetration of the electrons in any principal shell varies as :

a) s > p > d > f
b) s < p < d < f
c) s > p f
d) s

d > f

10. Which of the following set is non permissible?

a) n=4, l= 3, m=0
b) n=4, l= 2, m= 1
c) n= 4, l= 4, m=1
d) n=4, l=0, m= 0

11. Azimuthal quantum number for the last electron in Na atom is

a) 0
b) 1
c) 2
d) 3

12. How many electrons can fit in the orbitals for which n=3 and l =1 ?

a) 2
b) 6
c) 10
d) 14

13. Number of angular nodes for 4d orbitals is

a) 1
b) 2
c) 3
d) 4

14. In case of d_x2–_y2 orbital

a) Probability of finding the electron is zero in x-y plane
b) Probability of finding the electron along y -axis is zero
c) Probability of finding the electron along x- axis is zero
d) Probability of finding the electron is maximum along x and y- axis

15. The number of radial and angular nodes in 4p orbital are

a) 2, 0
b) 2, 1
c) 2, 2
d) 3, 1

16. Rutherford scatterring experiment is based on:

a) Alpha particle scaterring from Gold
b) Beta particle scaterring from Gold
c) Gamma particle scaterring from Gold
d) A and B

17. How many electron pair are present in

a) 2
b) 3
c) 4
d) 6

18. The H⁺ ion concentration of 0.05 M CH₃COOH solution is? (K_a = 1.25 x 10^-6)

a) 4 × 10^-6
b) 16 × 10^-3     
c) 25 × 10^-5
d) 32 × 10^-4

19. Which of the following statement is/are incorrect?
(I) pKw increase with increase in temperature
(II) pKw decreases with increase in temperature
(III) pKw = 14 at all temperature
(IV) pKw = pH at all temperature

a) only (I)
b) (II) and (IV) only
c) I and IV only
d) (I), (II) and (IV)

20. Calculate the pH of 10^-7 M NaOH

a) 7.3
b) 8.4  
c) 10.2
d) 6.5