Question # 1

Which one of the following gases exist in monoatomic form.

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Ozone

Nitrogen

Krypton

Phosphine

In which group of periodic table is the element which has atomic number 14.

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II

IV

III

VI

Which one of the following noble gases is least polarizable

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He

Ne

Ar

Kr

Peroxyacetyl nitrate (PAN) is a irritant to human beings and it affects

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Eyes

Ears

Stomach

Nose

In fluorescent tube, the gas filled is.

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He

Ne

Ar

Xe

Variable valency is generally exhibited by

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Transition elements

Alkali metals

s-block elements

Gaseous elements

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 one of the following elements burns in air to form an oxide which, when shaken with water, give a solution with a pH greater than 7.

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Carbon

Magnesium

sulphur

Hydrogen

Which one of the followings is woody raw material used for making pulp and paper

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Eucalyptus

Wheat straw

Bagasse

Cotton linter

Down's cell is used to prepare.

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Sodium carbonate

Sodium bicarbonate

sodium metal

Sodium hydroxide

Lead monoxide is

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Amphoteric

Neutral

Acidid

Basic

When CO2 is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is.

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Propane

Propanoic acid

Propanal

Propanol

Sulphur is essential constituent for plants. Which is not role of sulphur

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Chlorophyll development

Development of root system

Constituents of some proteins

Increase transpiration force

Which one of the following is co polymer

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PVC

Polyvinyl acetate

Nylon -6,6

Polyethene

Which element form maximum compounds with Xenon

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F

Cl

Br

I

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

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Acetic acid

Adipic acid

Viny chloride

Acetyl chloride

Banana flavour is given by the ester

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Octyl acetate

Amyl butyrate

Amyl acetate

Ethyl butyrate

Which of the following sulphates is not soluble in water.

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Sodium sulphate

Potassium sulphate

Zinc sulphate

Barium Sulphate

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