ECAT Pre Engineering Chemistry Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

Try The MCQ's Test For ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

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ECAT Chemistry Chapter 14 Group IIIA & IVA Elements

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Question # 1

Baking powder has which one of the following formula

Question # 2

Crystalline form of sulphur stable at room temperature is

Question # 3

Orthophosphoric acid is

Question # 4

Which of the following is a tetrabasic acid?

Question # 5

The number of electron that are paired in oxygen molecule are

Question # 6

What is chrome yellow?

Question # 7

Chemical composition of colemnite is:

Question # 8

The chemical formula of magnesite is

Question # 9

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

Question # 10

The acid used in lead storage cells is

Question # 11

When SO2is passed through acidified K2Cr2O7solution

Question # 12

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

Question # 13

Hybridized in carbon is:

Question # 14

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

Question # 15

Which is an essential constituent of chlorophyll

Question # 16

Which element has highest oxidation potential

Question # 17

Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M2O3become

Question # 18

All the following decompose easily on heating to give oxygen except

Question # 19

______ is used in breathing equipments for mountaineers and in space craft

Question # 20

Oleum is

Question # 21

Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because

Question # 22

Which of the following sulphates is not soluble in water

Question # 23

Which element form group 15 gives most basic compound with hydrogen?

Question # 24

What causes nitrogen to be chemically inert?

Question # 25

Which element forms an iron with charge 3+?

Question # 26

Borax is hydrated:

Question # 27

Which of the following form normal oxide

Question # 28

The element caesium bears resemblance with

Question # 29

CaC2on hydrolysis form

Question # 30

______ reacts with alkalis to give hydrogen

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 NaHCO3is commonly called
A. Soda ash
B. Baking soda
C. Washing soda
D. None of these
2 Orthophosphoric acid is
A. Monobasic
B. Dibasic
C. Tribasic
D. Tetrabasic
3 S-block elements consist of
A. Alkali metals
B. Alkaline earth metals
C. Alkali and alkaline earth metals
D. None of these
4 Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen dioxide
D. Dinitrogen tetraoxide
5 Calcium carbide reacts with water to produce
A. Acetylene
B. Methane
C. Ethylene
D. Ethane
6 Which will have the maximum value of heat of hydration
A. Na+
B. Cs+
C. Ba+2
D. Mg+2
7 Sometimes a yellow turbidity appears while passing H2S gas even in the absence of II group radicals. This is because
A. Sulphur is present in the mixture as impurity
B. IV group radicals are precipitated as sulphides
C. Of the oxidation of H2S gas by some acid radicals
D. III group radicals are precipitated as hydroxides
8 A compound used as eye wash:
A. Borax
B. Boric acid
C. Metabolic acid
D. Pyroboric acid
9 On alkali and alkaline earth metals down the group, there is decreasing trend in
A. m.p.
B. b.p.
C. Ionization potentiall
D. All of these
10 Which of the following compound is industrially prepared by the electrolysis of solution of NaCl
A. Na2CO3
B. NaHCO3
C. NaOH
D. NaOCl

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