Question # 1

The state of hybridization in ethene molecule is

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dsp²

sp³

sp²

sp

Which reagent will react with both aldehyde and ketones

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Grignard reagent

Tollen's reagent

Fehling's reagent

Benedict's reagent

A carboxylic acid contains

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A hydroxyl group

A carboxyl group

A hydroxyl and carboxyl group

A carboxyl and an aldehydic group

Which one of the following polymers has no peptide linkage in it.

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Terlene

Nylon -6,6

Protein

None of these

Which of the following are alkaline earth metals?

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Be, Mg, Ca

Li, Na, K

Fe, CO, Ni

B, Al, Ga

Which is insoluble in water.

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BeSO4

MgSO4

CaSO4

BaSO4

A carbohydrate that cannot be acid hydrolysed is called.

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Monosaccharides

Di saccharides

Poly saccharides

Starch

Which one of the following plastic is a thermosetting plastic.

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PVC

Polystyrene

Polyethene

Bakelite

A single chloride free radical can destroy how many ozone molecules

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100

100,000

100,00

unlimited

Al reacts with caustic soda to form

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Sodium aluminates

Aluminium hydroxide

Aluminium oxide

sodium tetra aluminate

Which of the following is non-typical transition element

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Cr

Mn

Zn

Fel

Which is called marsh gas

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S2Cl2

SOCl2

CH4

CHBr3

What type of reaction occurs between ethene and hydrogen.

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Addition

Substitution

Oxidation

Dehydration

The colour of transition metal complexes is due to

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d-d transition of electrons

Paramagnetic nature of transition elements

Ionization

Loss of s -electrons

Which one of the following elements has no variable valency.

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Zinc

Iron

cobalt

Manganese

For which mechanisms, the first step involved is the same.

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E2 and E2

E2 and SN2

SN1 and E2

E1 and SN1

Which one of the following elements shows variable valency, can act as a catalyst and form coloured compounds.

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Carbon

Chlorine

Sulpur

Iron

Boric acid can not be used.

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As antiseptic in medicine

For washing eyes

In soda bottle

For enamels and glazes

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