Subject

Chemistry

Class

NEET Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

21.

Which of the following complex compounds will exhibit highest paramagnetic behaviour ?

At. no. : Ti = 22, Cr = 24, Co = 27, Zn = 30

  • [Ti(NH3)6]3+

  • [Cr(NH3)6]3+

  • [Co(NH3)6]3+

  • [Co(NH3)6]3+

925 Views

22.

Which of the following is not a fat soluble vitamin?

  • Vitamin- B - complex

  • Vitamin -D

  • Vitamin -E

  • Vitamin -E

268 Views

Advertisement

23.

Which of the statement about 'Denaturation' given below are correct?
Statements,

A) Denaturation of proteins causes loss of secondary and tertiary structures of the protein.
B) Denaturation leads to the conversion of double strand of DNA into single strand.
C) Denaturation affects primary structure which gets distroyed.

  • (B) and (C)

  • (A) and (C)

  • (A) and (B)

  • (A) and (B)


B.

(A) and (C)

During denaturation secondary and tertiary structures of protein destroyed but the primary structure remains to interact.

385 Views

Advertisement
24.

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

638 Views

Advertisement
25.

The order of reactivity of phenyl magnesium bromide (phMgBr) with the following compounds.


  • III > II> I

  • II > I > III

  • I > III > II

  • I > III > II

968 Views

26.

The IUPAC name of the following compound

  • trans - 2- chloro - 3 - iodo - 2 - pentene

  • cis - 3- iodo - 4-  chloro - 3- pentene

  • trans - 3- iodo - 4- chloro - 3- pentene

  • trans - 3- iodo - 4- chloro - 3- pentene

325 Views

27.

Match the compounds given in the list I with List II and select the suitable option using the code given below.

 

List I

 

List II

A.

Benzaldehyde

1.

Phenolphtalein

B.

Phthalic anhydride

2.

Benzoin Condensation

C.

Phenyl benzoate

3.

Oil of wintergreen

D.

Methyl salicylate

4.

Fries rearrangement

  • A
    B
    C
    D
    4
    1
    3
    2
  • A
    B C D
    4 2 3 1
  • A
    B C D
    2 3 4 1
  • A
    B C D
    2 3 4 1
377 Views

28.

Which of the following compound is most basic?

481 Views

Advertisement
29.

Consider the reactions


space left parenthesis straight i right parenthesis space left parenthesis CH subscript 3 right parenthesis subscript 2 CH minus space CH subscript 2 space minus space CH subscript 2 space Br space rightwards arrow with straight C subscript 2 straight O subscript 5 OH on top space left parenthesis CH subscript 3 right parenthesis subscript 2 CHCH subscript 2 OC subscript 2 straight H subscript 5 space plus space Br to the power of minus

left parenthesis ii right parenthesis space left parenthesis CH subscript 3 right parenthesis subscript 2 CHCH subscript 2 Br rightwards arrow with straight C subscript 2 straight H subscript 5 straight O to the power of minus on top space left parenthesis CH subscript 3 right parenthesis subscript 2 CHCH subscript 2 OC subscript 2 straight H subscript 5 space plus Br to the power of minus

The mechanisms of reactions (i) and (ii) are respectively

  • SN1 and SN2

  • SN1 and SN1

  • SN2 and SN2

  • SN2 and SN2

281 Views

30.

A organic compound 'A' on treatment with NH3 gives 'B' which on heating gives 'C', 'C" when treated with Br2 in the presence of KOH produces ethylamine. Compound ' A' is

  • CH3COOH

  • CH3CH2CH2COOH

  • CH3(CH3)CHCOOH

  • CH3(CH3)CHCOOH

572 Views

Advertisement