Question # 1

SO2 is not absorbed in water directly to form H2SO4 because.

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The reaction does not go to completion

The reaction is quite slow

The reaction is exothermic

SO3 is insoluble in water

Chile saltpeter has the chemical formal

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NaNO₃

KNO₂

Na₂B₄O₇

Na₂CO₃.H₂O

Which metal is redered passive by HNO₃due to formation of a film of metal oxide over the metal

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Pt

Sn

CO

Mn

The most ionic is

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HF

HCl

HBr

HI

Which one is a disaccharide

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Glucose

Sucrose

Fructose

Cellulose

Synthetic rubber is made by polymerization of

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Vinylaecetate

Acetylene

Divinylacetylene

Chloroprene

Down's cell is used to prepare.

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Sodium carbonate

Sodium bicarbonate

sodium metal

Sodium hydroxide

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 substance is used ot bleach the pulp.

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Na2SO3

NaCl

NaClO

NaOH

Element of which group are called non typical transition elements.

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IB

II B

II A

VII B

the percentage of nitrogen in NH3 is

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46%

60%

82%

100%

The anhydride of HCIO4 is

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CIO3

CIO2

Cl2O5

Cl2O7

S_N2 reactions can be carried out with

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Primary alkylhalide

Secondary alkyhalide

Tertiary alkylhalide

All of these

Predict the product or reaction.

Acetaldehyde +NaOH

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An aldol

Acetic acid

Ethanol

Paraldehyde

Fungicides are teh pesticides which

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Control the growth of fungus

Kill insects

Kill plant

Kill herbs

Which carbohydrate can be used for silvering of mirror.

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Glucose

Fructose

Maltose

All

Which one of the following has highest melting and boiling points.

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HF

HBr

HCl

HI

--------------- element forms an ion with charge 3⁺

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Beryllium

Aluminium

Carbon

Silicon

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