Subject

Chemistry

Class

JEE 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

Advertisement

41.

If in a cubic cell, atoms A present at all comers and atoms B at the centre of each face. What will be the molecular formula of the compound, if all the atoms present on one body diagonal are replaced by atom C?

  • A3B12C

  • AB12C3

  • ABC3

  • A3B12C4


A.

A3B12C

Atoms A are present at corners,

Atoms A per unit cell =8×18=1.

If atoms present on one body diagonal are replaced by atom C,then atoms A per unit cell = 68=34.

Atoms B are at centre of each face = 6× 12=3.

Atoms C at corners, atoms C per unit cell will be = 2× 18=14.

A B C
34 3 14
3 12 1

So, molecular formula A3B12C.


Advertisement
42.

If an element A is placed in an electrochemical series above element B but below element C, then the order of oxidation power of elements is

  • C>A>B

  • B>A>C

  • A>B>C

  • C>B>A


43.

The IUPAC name of the following compound is

 

  • 2-carbamoylhexanal

  • 2-carbamoylhex-3-enal

  • 2-methyl-6-oxohex-3-enamide

  • 6-keto-2-methyl hexamide


44.

Which of the following compounds contain atleast one secondary alcohol?

 

  • (i), (ii), (iii), (v)

  • (i), (iii), (v)

  • (i), (ii), (iv), (vi)

  • (i), (ii), (iii)


Advertisement
45.

When Grignard reagentreacts with ketone, it yields

  • 3° alcohol

  • ethanol

  • 1° alcohol

  • 2° alcohol


46.

Which of the following reacts fastest with conc.HCl ?

  • (CH3)3COH

  • CH2=CH-CH2OH


47.

A polymer commonly used as a packaging material is

  • PVC

  • bakelite

  • polythene

  • polypropylene


48.

Product P in the above reaction is


Advertisement
49.

The structure of carboxylate ion is best represented as


50.

. In the above reaction, P and Q respectively are


Advertisement