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

Tincal is a mineral of:

Question # 2

Sulphuric acid reacts with PCl5to give

Question # 3

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

Question # 4

Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

Question # 5

Which will have the maximum value of heat of hydration

Question # 6

Silicon atom is hybridized:

Question # 7

The acid used in lead storage cells is

Question # 8

The silver bromide in hypo (Na2S2O3) solution is

Question # 9

Which metal is used in the thermit process because of its activity?

Question # 10

Pb has inert pair of electrons:

Question # 11

Calcium carbide reacts with water to produce

Question # 12

The element caesium bears resemblance with

Question # 13

Commercial common salt becomes slight damp on storing because

Question # 14

Which of the following phosphorus is most reactive?

Question # 15

The chemical formula of Trona is

Question # 16

When ammonia is heated with cupric oxide, a molecule of ammonia will

Question # 17

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

Question # 18

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

Question # 19

Copper oxide is dedected by borax bead test with colour:

Question # 20

______ reacts with alkalis to give hydrogen

Question # 21

Which of the following salt is used as purgative

Question # 22

The formula of lime stone is

Question # 23

Boric acid cannot be used:

Question # 24

Which is used in navigational equipments?

Question # 25

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

Question # 26

Which of the following compounds is explosive in nature?

Question # 27

CaC2on hydrolysis form

Question # 28

Which of the following form normal oxide

Question # 29

Phosphine is not obtained by the reaction when

Question # 30

When SO2is passed through acidified K2Cr2O7solution

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 The maximum number of electrons in the outermost shall of s-black elements is
A. One
B. Two
C. Three
D. Four
2 Identify the incorrect statement with respect to ozone
A. Ozone is formed in the upper atmosphere by a photochemical reaction involving dioxygen
B. Ozone is more reactive than diaoxygen
C. Ozone is diamagnetic whereas dioxygen is paramagnetic
D. Ozone protects the earth's inhabitants by absorbing gamma-radiations
3 The chemical formula of magnesite is
A. MgCl2
B. Mg(HCO3)2
C. MgCO3
D. None of these
4 Which is an essential constituent of chlorophyll
A. Be
B. Fe
C. Mg
D. Ca
5 Which of the following salt is soluble in water
A. CaCO3
B. CaSO4
C. MgSO4
D. BaSO4
6 Gypsum is a common mineral of
A. Magnesium
B. Strontium
C. Calcium
D. Barium
7 Down's cell is used to prepare
A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium metal
D. Sodium hydroxide
8 Which of the following form normal oxide
A. K
B. Li
C. Na
D. None
9 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
10 When SO2is passed through acidified K2Cr2O7solution
A. The solution turns blue
B. The solution is decolourised
C. SO2is reduced
D. Green Cr2(SO4)3is formed

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