Question # 1

Which is called marsh gas

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S2Cl2

SOCl2

CH4

CHBr3

The number of peptide bonds in dipeptide is

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0

1

2

3

A polymeric substance that is formed in the liquid state and then hardened to a right solid is called a

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Fiber

Plastic

Varnish

Polyamid resin

Iodine deficiency in diet is known to cause.

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Beri Beri

Goiter

Rickets

Night blindness

The bond angle between any two SP²Hydridized orbitals is of

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180°

109.5°

120°

107.5°

The disease can be eradicated by using pesticides.

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Malaria

Yellow fever

Sleeping sickness

All of these

Which one of the following acids acts as oxidizing agent but never a reducing agent.

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HCIO

HCIO2

HCIO3

HCIO4

Geometrical isomerism in alkene is due to.

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C = C free rotation of bond

No C = C free rotation of bond

Presence of multiple bond only

Opticla rotation due to multiple bond

Which element does not have allotropic form

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Nitrogen

Phosphorous

Arsenic

Antimony

Catalyst used in thermal cracking

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Platinum

Nichel

Al2O3 and SiO2

Fe2O3 and CuO

Which one of the following compound does not react with NaOH and I2 and also does not form Iodoform.

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C2H5OH

CH3CHO

CH3-CO-CH3

C2H5-O-C2H5

Which one of the following polymers is called a polyamide

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Nylon

Rayon

Terylene

Orlon

Boric acid is used as eye wash due to its

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Weakly acidic property

Antiseptic nature

Antibiotic nature

Weakly basic properties

When CO₂is made to react with ethyl-magnesium iodide followed by acid hydrolysis, the product formed is

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Propane

Propanoic acid

Propanal

Propanol

Which hydride is intermediate in nature.

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NaH

BeH2

NH3

HCl

Which statement is incorrect about H2SO4

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Dehydration agent

dibasic acid

Oxidizing agent

Reducing agent

Total number of d-block elements are

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10

20

30

40

Litharge is chemically

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PbO

PbO2

Pb3O4

Pb(CH3COO)2

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