Question # 1

Which one of the following is not an alkali metal?

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Francium

Caesium

Rubidium

Radium

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

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Be

Ra

Ba

Rn

The oxides of beryllium are

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acidic

basic

amphoteric

none of these

alkaline metal have electrons in s-orbitals:

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One

Two

three

Four

Which alkaline earth metal makes peroxide?

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Be

Mg

Ca

Ba

Which are being formed by alakli metals?

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oxides

nitrides

carbides

peroxides

Transition elements belong to

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I-A & II-A

III-A to VIII-A

I-B to X-B

Lanthanides

Arabic word "alkali" means:

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The ashes

the sour

The fragrant

Caustic

Alkali metals have electrons in s-orbital:

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one

two

three

Four

Which is insoluble carbonate?

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KCO₃

CaCO₃

Na₂CO₃

K₂CO₃

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

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H₂

Na

Cl₂

O₂

The element caesium bears resemblance with:

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Ca

Cr

Both of the above

None of these

Chile saltpetre has the chemical formule

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NaNO₃

KNO₃

Na₂B₄O₇

Na₂CO₃.H₂O

II-A group element are called:

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s-block elements

p-block elements

d-block elements

f-block elements

Which are being formed by alkali metals?

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oxides

nitrides

carbides

peroxides

Which one is alkali metal in them?

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Rubidium

Magnesium

Calcium

Barium

d-block elements belong to groups

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I-A & II-A

III-A to VIII-A

I-B to X-B

Lanthanides

Lime is often used as an agent:

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dehydrating

hydrating

oxidizing

reducing

Which of the following sulphates is not soluble in water?

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Sodium sulphate

Potassium sulphate

Zinc sulphate

Barium sulphate

Gypsom added in cement is:

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1%

2%

3%

4%

Which oxide is insouluble

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Li₂O

Na₂O

K₂O

BaO

Cement plaster is made by mixing plaster of paris with

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glue or oil

gypson

glycol

alum or borax

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