Question # 1

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄or LiAIH₄?

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1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

Which one of the following elements occurs free in nature?

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N

P

As

Sb

The number of electrons in the M shell of the element with atomic number 24 is

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24

12

13

8

The following has zero valency

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Na

Be

Al

Kr

Setting of cement is an

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Exothermic reaction

Endothermic reaction

Neither exothermic nor endothermic

None

Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyl acetate

The addition of HBr is easiest with

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CH2 = CHCl

CICH = CHCl

CH3 - CH = CH2

(CH3)2 C = CH2

Hydrolytic conversion of sucrose into glucose and fructose is known as

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Induction

Inversion

Insertion

Inhibition

The spectrum of helium is expected to be similar to that of

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H

Li⁺

Na

He⁺

On heating acetaldehyde with ammonical silver nitrate solution, we get

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CH₃OH

Silver acetate

HCHO

Silver mirror

What happens when CCl₄is treated with AgNO₃solution?

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NO₂will be evolved

A white ppt. of AgCl will form

CCl₄will dissolve in AgNO₃solution

Nothing will happen

Bromine is obtained on a commercial scale from

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Caliche

Carnallite

Common satl

Cryolite

Magnesium keeps on burning in

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N₂

CO₂

N₂O

N₂as well as CO₂

The halide which is not hydrolysed is

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SiCl₄

SiF₄

CCl₄

PbCl₄

The symbol of the element whose atoms have the outer most electronic configuration 2s²sp³is

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N

Li

P

Na

Al is more reactive than Fe but Al is less easily corroded than Fe because

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It is a noble metal

oxygen forms a protective reaction easily with water

Iron undergoes reaction easily with water

Fe form mono and divalent ions.

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