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

00:00
Question # 1

Baking powder has which one of the following formula

Question # 2

The alkali metals form

Question # 3

Heavy water is obtained by

Question # 4

The acid used in lead storage cells is

Question # 5

Which has soapy touch?

Question # 6

Which of the following phosphorus is most reactive?

Question # 7

Chile saltpetre has the chemical formula

Question # 8

Which of the following is formed by the action of water on sodium peroxide?

Question # 9

CaC2on hydrolysis form

Question # 10

Sodium forms largely

Question # 11

P2O5is heated with water to give

Question # 12

The alkaline earth elements have in their s-orbital

Question # 13

Sodium hexametaphophate is known as

Question # 14

Aluminium oxide is:

Question # 15

Pb has inert pair of electrons:

Question # 16

The most acidic of the following compounds is

Question # 17

Borax is a common mineral of alkali metal sodium. Its formula is

Question # 18

When SO2is passed through acidified K2Cr2O7solution

Question # 19

Tincal is a mineral of:

Question # 20

Which carbonate of alkali metals is insoluble in water

Question # 21

On alkali and alkaline earth metals down the group, there is decreasing trend in

Question # 22

Which colour is imparted by sodium

Question # 23

Phosphide ion has the electronic structure similar to that of

Question # 24

Which is used in navigational equipments?

Question # 25

As a fixing agent in photography, sodium thisoulphate is used for

Question # 26

Which of the following is the hardest metal among following

Question # 27

______ is called milk of magnesia

Question # 28

Polyanion formation is maximum in

Question # 29

Which of the following oxides is peroxide?

Question # 30

Hypo is used in photography for

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 Sulphuric acid has great affinity for water because
A. It hydrolyses the acid
B. It decomposes the acid
C. Acid forms hydrates with water
D. Acid decomposes water
2 The ore CaSO42H2O has the general name
A. Gypsum
B. Dolomite
C. Calcite
D. Epsom salt
3 Which carbonate of alkali metals is insoluble in water
A. Na2CO3
B. K2CO3
C. Li2CO3
D. Cs2CO3
4 As a fixing agent in photography, sodium thisoulphate is used for
A. Dissolving out unreacted silver bromide
B. Converting silver
C. Reducing solubility of AgBr
D. Preventing overdeveloping and fogging
5 S-block elements consist of
A. Alkali metals
B. Alkaline earth metals
C. Alkali and alkaline earth metals
D. None of these
6 Which is used to remove air bubbles form metals?
A. B
B. Be
C. Mg
D. Al
7 CaC2on hydrolysis form
A. CH4
B. C2H4
C. C2H2
D. C6H6
8 Borax is a common mineral of alkali metal sodium. Its formula is
A. Na2B4O7
B. Na2,B4O7. 10H2O
C. Na2B3O6. 10H2O
D. Na2B4O7- 5H2O
9 The element which has a simple cubic lattice in solid state is
A. Se
B. Te
C. Po
D. None of these
10 Commercial common salt becomes slight damp on storing because
A. Common salt is hygroscope
B. Common salt contains some impurity, which is hygroscopic
C. Salt in efflorescent
D. Salt is crystalline

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