Question # 1

Which raw material is used for preparation of bleaching powder.

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Cl2 and H2O

Cl2 and Lime

Cl2 and HOCl

HCl and Lime

Aluminium does not corrode because.

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It is a semi metal

It is a silver shining metal

It does not react with O2

It forms a protective layer of Al2O3

Which one of the following comp9ounds on hydrolysis will not produce a carboxylic acid.

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Alkyl halide

Alkyl Nitrite

Addition product of Grignard reagent and CO2

Ester boiled with sodium hydroxide

The word paper is derived from the name of which reed plant.

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Rose

Sun flower

Papyrus

Water Hyacinth

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

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Terlene

Nylon -6,6

Protein

None of these

Mark the correct statement.

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Na+ is smaller than Na atom

Na+ is large than Na atom

Cl- is smaller than Cl atom

cl- and Cl are equal in size

According to Lewis concept, ethers behave as

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Acid

Base

Nucleophile

Solvent

Which of the following is Ortho and Para directing group

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-I

-CHO

-COR

-NH₂

The oligosaccharides contain number of hexose unit.

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2 to 7

2 to 8

2 to 9

2 to 100

In which ore carbon is present

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Magnesite

Epsom salt

Barite

Sylvite

Which element reacts with alkali and H2 gas is produced.

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Be

Mg

Ca

Sr

Which of the following is non-typical transition metal

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Fe

Mn

Zn

Ni

Which element shows highest oxidation state among these

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Zn

Fe

Mn

Sc

Which isomerism is not found in alkenes.

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Chain isomerism

Positional isomerism

Geometrical isomerism

Metamerism

Role of H2S in the given chemical reaction is H2S + I2--------------- 2HI+S

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Oxidising agent

Reducing agent

Dehydrating agent

As an acid

The most ionic is

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HF

HCl

HBr

HI

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 halogen will react spontaneously with Au(s) to produce Au³⁺

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Br₂

F₂

I₂

Cl₂

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