Question # 1

The brown gas formed, when metal reduce HNO₃

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NO

NO₂

N₂O₃

N₂O₅

When benzaldehyde is converted to benzyl alcohol by reading with NaOH the reaction is known as.

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Cannizzaro reaction

Wurtz reaction

Wol;ficisthner reaction

Aldol reaction

Which raw material is used for manufacture eof HNO3 by Birkland eyed process

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NH3 and CO2

Air

Air and gypsum

Lime stone and urea

Formula of choloroform is

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CH₃Cl

CCl₄

CH₂Cl₂

CHCI₃

Usually the percentage of moisture is paper is

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1- 3%

4-6%

6-8%

5%

Which element does not have allotropic form

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Nitrogen

Phosphorous

Arsenic

Antimony

Which of the following enzymes brings about the hydrolysis of fats

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Urease

Maltase

Zymase

Lipase

The number of acidic hydrogen present in 1- Propyne is

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1

2

3

4

The IUPAC name of CH3OCH6H5 is

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Methyl phenyl ether

Methaoxy benzene

Phenoxy methane

methoxy phenyl

Which one of the following noble gases is least polarizable

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He

Ne

Ar

Kr

Which substance shows very weak hydrogen bonding with water.

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Methanol

Ethanol

Diethyl ether

Benzene

Co-ordination number of Pt in Pt Cl(NO₂)(NH₃)₄

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2-

4

1

6

Structure of benzene is

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Tetrahedral

Trigonal planar

Hexagonal planar

Linear

The number of peptide bonds in dipeptide is

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0

1

2

3

Acetic acid is manufactured by.

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Distillation

Fermentation

Ozonolysis

Esterification

Colour of which halogen is not correctly related.

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F2 --- colourless gas

Cl2---- greenish yellow gas

Br2----- Reddish brown liquid

I2-------- grayish Black solid

Nylon 6,6 is obtained by the reaction of hexamethylene diamine with

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Acetic acid

Adipic acid

Viny chloride

Acetyl chloride

Down's cell is used to prepare.

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Sodium carbonate

Sodium bicarbonate

sodium metal

Sodium hydroxide

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