Question # 1

Gypsom added in cement is

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1%

2%

3%

4%

Which ion will have the maximum value of heat of hydration?

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Na⁺

Cs⁺

Ba⁺

Mg⁺²

Lime is often used as an agent:

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dehydrating

hydrating

oxidizing

reducing

Down's cell is used to prepare:

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Sodium carbonate

Sodium bicarbonate

Sodium metal

Sodium hydroxide

Which one of the following does not belong to alkaline earth metals?

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Be

Ra

Ba

Rn

Which is plaster of paris?

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CaSO₄.H₂O

(CaSO₄)₂.H₂O

CaSO₄.2H₂O

CaSO₄.3H₂O

Which oxide is insouluble

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Li₂O

Na₂O

K₂O

BaO

Which are being formed by alakli metals?

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oxides

nitrides

carbides

peroxides

Cement plaster is made by mixing plaster of paris with:

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glue or oil

gypsom

glycol

alum or borax

the oxides of beryllium are:

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acidic

basic

amphoteric

None of these

Which element is deposited at the cathode during the electrolysis of brine in Nelson's cell?

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H₂

Na

Cl₂

O₂

Which is insoluble carbonate?

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KCO₃

CaCO₃

Na₂CO₃

K₂CO₃

Acidic soils are neutralized by adding:

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Plaster of paris

Brine

Lime

Milk of magnesia

Which one is alkali metal in them?

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Rubidium

Magnesium

Calcium

Barium

Transition elements belong to

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I-A & II-A

III-A to VIII-A

I-B to X-B

Lanthanides

Milk of lime is

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MgO

CaO

Ca(OH)₂

Mg(OH)₂

Maximum shielding effect is observing in

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Li

Be

Mg

Ca

Diaphragm cell is used to prepare

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sodium

sodium hydroxide

calcium

magnesium

Plaster of paris is mixed with water, the expansion in volume is:

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1%

2%

3%

4%

Which alkaline earth metal makes peroxide?

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Be

Mg

Ca

Ba

The element caesium bears resemblance with:

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Ca

Cr

Both of the above

None of these

Lime is often used as an agent

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dehydrating

hydrating

oxidizing

reducing

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