Question # 1

Which are being formed by alakli metals?

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oxides

nitrides

carbides

peroxides

Chlorophyll contains in it

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Li

Na

Mg

Ca

Which are being formed by alkali 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

acidic soils are neutralized by adding

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plaster of paris

brine

lime

milk of magnesia

Which is plaster of paris?

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CaSO₄.H₂O

(CaSO₄)₂.H₂O

CaSO₄.2H₂O

CaSO₄.3H₂O

Which of the following sulphates is not soluble in water?

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Sodium sulphate

Potassium sulphate

Zinc sulphate

Barium sulphate

Lime is often used as an agent:

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dehydrating

hydrating

oxidizing

reducing

Lime is often used as an agent

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dehydrating

hydrating

oxidizing

reducing

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

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Be

Re

Ba

Rn

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

Which alkaline earth metal makes peroxide?

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Be

Mg

Ca

Ba

Gypsom added in cement is:

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1%

2%

3%

4%

Chile saltpetre has the chemical formule

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NaNO₃

KNO₃

Na₂B₄O₇

Na₂CO₃.H₂O

Which one is alkali metal in them?

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Rubidium

Magnesium

Calcium

Barium

Group VII-A elements are called:

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s-block elements

p-block elements

d-block elements

f-block elements

Alkali metals have electrons in s-orbital:

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one

two

three

Four

The element caesium bears resemblance with:

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Ca

Cr

Both of the above

None of these

Chlorophyll contains in it:

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Li

Na

Mg

Ca

The strong alkaline solution in water is of metal:

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Potassium

Sodium

Lithium

Magnesium

I-A group elements are called:

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Alkali-metal

alkaline earth metals

Halogens

Chalocogens

Acidic soils are neutralized by adding:

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Plaster of paris

Brine

Lime

Milk of magnesia

Which one of the following is not an alkali metal?

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Francium

Caesium

Rubidium

Radium

Diaphragm cell is used to prepare

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sodium

sodium hydroxide

calcium

magnesium

All alkali metals react with acetylene to form acetylides except:

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Li

Na

K

Rb

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

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H₂

Na

Cl₂

O₂

Maximum shielding effect is observing in

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Li

Be

Mg

Ca

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

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Na⁺

Cs⁺

Ba⁺

Mg⁺²

Which is insoluble carbonate?

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KCO₃

CaCO₃

Na₂CO₃

K₂CO₃

CO₂absorber used in breathing tanks is

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K₂O₂

K₂O

KO₂

Na₂O₂

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