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

Which one of the following properties is not correct for ozone?

Question # 2

Electron affinity of sulphur is

Question # 3

Sulphuric acid has great affinity for water because

Question # 4

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

Question # 5

Sodium forms largely

Question # 6

Which will have the maximum value of heat of hydration

Question # 7

Gypsum is applied to the soil to provide calcium and

Question # 8

Sodium should be stored in

Question # 9

Alkali metals react violently with halogens to form

Question # 10

Which is not the form of silica?

Question # 11

The structure of white phosphorus is

Question # 12

What is going to replace the petroleum?

Question # 13

Which of the following is a tetrabasic acid?

Question # 14

What causes nitrogen to be chemically inert?

Question # 15

Which of the following is not the reactions of lithium

Question # 16

Which salt is used for preserving food

Question # 17

Which is litharge or massicot?

Question # 18

Oleum is

Question # 19

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 # 20

Phosphide ion has the electronic structure similar to that of

Question # 21

Lime, calcium oxide, is used in agriculture for

Question # 22

Chile saltpetre has the chemical formula

Question # 23

Which of all following compound is not possible

Question # 24

Lithium reacts with air to form

Question # 25

Which has soapy touch?

Question # 26

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

Question # 27

Potassium superoxide has a use in breathing equipment in space crafts. The balanced equation for the reaction is

Question # 28

Red P can be obtained form white P by

Question # 29

The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is

Question # 30

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

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ECAT Chemistry Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
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 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
4 Which of the following compounds is explosive in nature?
A. Phosphorus trichloride
B. Nitrogen trichloride
C. Hyponitrous acid
D. Nitrosyl chloride
5 Calcium carbide reacts with water to produce
A. Acetylene
B. Methane
C. Ethylene
D. Ethane
6 White P when boiled with strong solution of caustic soda produces
A. Phosphine
B. Posh acid
C. Phosphorous acid
D. None
7 Which element form group 15 gives most basic compound with hydrogen?
A. Nitrogen
B. Bismuth
C. Arsenic
D. Phosphorus
8 Corrundam is ore of:
A. Li
B. Be
C. B
D. Al
9 The chemical formula of gypsum is
A. CaSO4. 5H2O
B. CaSO4. 4H2O
C. CaSO4. 2H2O
D. None of these
10 HNO2acts as an/a
A. Acid
B. Oxidizing agent
C. Reducing agent
D. All the three

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