Question # 1

Which ether is symmetrical in nature.

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Methyl ethyl ether

Diphenyl ether

Methyl n propyl other

Methoxy benzene

Which hydride is intermediate in nature.

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NaH

BeH2

NH3

HCl

The general formula for Alkene having one double bond is

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C_nH_2n+1

C_nH_2n

C_nH_2n-2

C_nH_2n+2

Which element is present in chlorophyll

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Ca

Mg

K

Be

To product aldehyde group against alkaline oxidizing agent.

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It is reduced in the presence of catalyst

An acetal is formed

It is oxidized

It is treated with aqueous NaBH4

Vinyl chloride when boiled with alcoholic KOH , gives

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Acetylene

Ethylene

Ethene

Ethyl alcohol

Which of the following noble gas is used for arc welding and cutting

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Helium

Argon

Xenon

Radon

Colour of K2Cr2O7 is

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Red

Orange

Green

Yellow

Ecosystem is a smaller unit of

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lithospher

hydroshper

atmosphere

biosphere

What are the number of the electrons in valence shell of P in PCl3

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4

6

8

10

Mono saccharides contain carbon atoms.

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3 to 6

3 to 7

3 to 9

only six

Which has reddish brown colour.

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silver acetylide

Copper acetylide

BaSO4

Aqueous KMnO4 solution

Pulp is washed to remove lignin from it. Due to the presence of lignin in pulp paper becomes.

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Soft

Brittle

Acidic

Colourless

The Milk of magnesia is used for the treatment of

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Basicity

Rancidity

Acidity

Jaundance

The chemist who synthesized urea from ammonium cyanate was

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Berzelius

Kolbe

Wholer

Lavoisier

Chemical composition of colemanite is

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Ca₂B₆O₁₁. 5H₂O

CaB₄O₇. 4H₂O

Na₂B₄O₇.4H₂O

CaNaB₅O₉. 8H₂O

Which of the following lipids does not have glycerol backbone.

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Fat

Oil

Cholesterol

Phospholipid

Out of the elements of group VA, the highest energy is possessed by

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N

P

Sb

Bi

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