Question # 1

Ozone is not

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An allotrope

A powerful oxidizing agent

Paramagnetic

A bent molecule

Which is litharge or massicot?

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PbO

Pb₂O

Pb₃O₄

PbO₂

Boric acid cannot be used:

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An antiseptic in medicine

For washing eyes

In soda bottles

For enamels and glazes

Orthophosphoric acid is

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Monobasic

Dibasic

Tribasic

Tetrabasic

The oxidation number of each element of group ll-A is

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0

+1

+2

-1

Which of the following oxides is peroxide?

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Na₂O₂

MnO₂

BaO

SO₂

Which is used to remove air bubbles form metals?

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B

Be

Mg

Al

Which of the following sulphates is not soluble in water

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Sodium sulphate

Potassium sulphate

Zinc sulphate

Barium sulphate

The electrolytic cell used for the production of metallic sodium is known as

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Down's cell

Solvary's cell

Haber's cell

None of these

White P when boiled with strong solution of caustic soda produces

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Phosphine

Posh acid

Phosphorous acid

None

Which salt is used for preserving food

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CaCl₂

NaCl

Na₂SO₄

BaCl₂

Crystalline form of sulphur stable at room temperature is

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Rhombic sulphur

Monoclinic sulphur

Plastic sulphur

Prismatic sulphur

Density of aluminium is (g cm^-3):

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B

Al

Si

Ge

The number of electron that are paired in oxygen molecule are

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16

12

14

7

In a group IIA from top to bottom as the atomic number increases, there is regular decreases in

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Ionic size

Atomic size

Ionization potential

None of these

Which of the following elements is not present abundantly in earth's crust?

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Silicon

Aluminium

Sodium

Oxygen

Which of the element is not alkali metal

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Lithium

Rubidium

Francium

Magnesium

What is chrome yellow?

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Pbo

Pb₂O

PbCrO₄

Pb₃O₄

Which of the following is not the reactions of lithium

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NaHCO₃is prepared by

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Down's process

Solvay's process

Nelson's process

None of these

Hypo is used in photography for

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Developing picture

Picture printed

The colour of picture

The fixation of picture

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

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SO₂

HBR

HCl

H₂S

Polyanion formation is maximum in

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Nitrogen

Oxygen

Sulphur

Boron

Which of the following statement is not related to Solvay's process of Na₂CO₃

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Cheap materials

Pure product

Continuous process

Harmful by-products

Permonosulphuric acid is known as

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Marshall's acid

Carlo's acid

Sulphuric acid

None of these

LiOH ______ soluble than NaOH

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More soluble

Less soluble

Equally soluble

None

The chemical formula of Trona is

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KCl . MgCl₂. 6H₂O

Na₂CO₃. 2NaHCO₃. 2H₂O

Na₂CO₃. H₂O

KCl

Silicon atom is hybridized:

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sp

sp²

sp³

dsp²

Alkali metals react violently with halogens to form

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Hydrides

Halides

Anyhydrides

None of these

Which element among the following belongs to Group IV-A of the periodic table?

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Barium

Iodine

Lead

Oxygen

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ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test MCQs With Answers

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