Question # 1

The element cesium bears resemblance with

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Ca

Cr

Both of the above

None of the above

Nelson's cell is used to prepare

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NaOH

Na₂CO₃

Na metal

NaCl

Which substance is used to lower the melting point of NaCl in Down's cell

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CaCO3

CaCl2

MgSO4

AlCl3

Chile saltpeter has the chemical formula

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NaNO3

KNO3

Na2B4O7

Na2CO3.H2O

Chile saltpeter has the chemical formal

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NaNO₃

KNO₂

Na₂B₄O₇

Na₂CO₃.H₂O

Which one of the following is not an alkali metal.

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Francium

Cesium

Rubidium

Radium

The mineral CaSO₄.2H₂O has the general name

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Dolomite

Gypsum

Calcite

Epsom Salt

Which of the following sulphates is not soluble in water.

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Sodium sulphate

Potassium sulphate

Zinc sulphate

Barium Sulphate

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

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Be

Ra

Ba

Rn

Which one is not use of lime

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Extraction of metals

Ceramic industry

Preparation of bleaching powder

Preparation of gypsum

Which one of the following has lowest first ionization energy.

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Li

Na

Rb

Cs

Sodium is collected over molten sodium chloride in Down's cell, because.

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It does not react with NaCl

It is lighter in weight and floats on molten NaCl

Its reactivity is greater than NaCl

None of these

Which one does not belong to the alkaline earth metals

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Be

Ba

Ra

Rn

The Milk of magnesia is used for the treatment of

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Basicity

Rancidity

Acidity

Jaundance

Which is called milk of magnesia.

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MgCO3

Mg(OH)2

MgSO4

MgCl2

Which elements are deposited at the cathode during the electrolysis of brine in diaphragm cell

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H₂

Ba

Ra

Rn

------------- does not belong to Alkaline-Earth metals

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Be

Ra

Ba

Rn

The oxide of beryllium is

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Acidic

Basic

Amphoteric

None of these

Which one of the following is not an alkali metal

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Francium

Caesuym

Rubidium

Radium

Which is more basic

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RbOH

NaOH

KOH

Li OH

When carbon di oxide is bubbled through lime water, white precipitate is formed This precipitate is.

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COCl2

H2CO3

CaO

CaCO3

Sulphur is essential constituent for plants. Which is not role of sulphur

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Chlorophyll development

Development of root system

Constituents of some proteins

Increase transpiration force

The ore CaSO4.2H2O has the general name.

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Gypsum

dolomite

Calcite

Epsom salt

Which metal oxide is insoluble in water

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MgO

CaO

SrO

BaO

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