Question # 1

The colour of litmus in a strong basic solution become.

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Yellow

Blue

Red

Colourless

When acid react with carbonates and bicarbonates which gas is evolved?

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H2

CO₂

Cl₂

N₂

pH of neutral solution is always.

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6

5

7

10

A substance which can behave as an acid as well as a base is called.

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Acid

Base

Amphoteric

Neutral

Which acid is used an electrolyte in lead storage battery?

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H₂SO₄

HNO₃

HCl

CH₃COOH

A reaction between an acid and base produce.

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Salt and water

Salt and gas

Salt and acid

Salt and bases

Which acid used for food preservation?

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H₂SO₄

HNO₃

HCl

CH₃COOH

Water of crystallization is responsible for.

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Melting points of crystals2

Boiling point of crystal

Shape of crystal

Transition points of crystals

Methyl orange produces which colour in basic solution

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Red

Yellow

Pink

White

Acid used for cleaning metals , tanning and in printing industries, is:

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H2SO4

HNO3

CH3COOH

HCI

Water is a;

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strong electrolyte

non-electrolyte

weak electrolyte

natural compound

Which is used for cleaning agent for domestic and commercial purpose?

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NaCl

Na₂CO₃

NaHCO₃

Na₂SiO₃

The color of Fe(OH)₂ ppt is.

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White

Brown

Muddy green

Blue

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