Chemistry Test

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Chemistry Test - 59

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Weekly Quiz Competition

Question 1
1 / -0

What is the third most common gas found in the air we breathe ?

A
Argon

B
Neon

C
Carbondioxide

D
Hydrogen

Solution

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon, carbon dioxide neon, helium, methane, krypton, hydrogen and xenon are in much smaller amounts.
Question 2
1 / -0

Which one of the following is used to induce artificial rain ?

A
Potassium Nitrate

B
Ammonium chloride

C
Calcium carbonate

D
Silver lodide

Solution

Silver lodide is used to induce artificial rain.
Question 3
1 / -0

Among the following the maximum covalent character is shown by the compound

1. MgCl₂

2. FeCl₂

3. SnCl₂

4. AlCl₃

A
Option 1

B
Option 2

C
Option 3

D
Option 4

Solution

According to Fajans rule, cation with greater charge and smaller size favours covalency.
Question 4
1 / -0

Which one among the following is the heaviest

A
1 mole of water molecules

B
1 mole of ammonia molecules

C
1 mole of sodium atoms

D
1 mole of hydrogen molecules

Solution

1 mole of sodium atomsis the heaviest.
Question 5
1 / -0

The nitrogen atom has 7 protons and 7 electrons,The nitride ion will have

A
10 protons and 7 electrons

B
7 protons and 10 electrons

C
4 protons and 7 electrons

D
4 protons and 10 electrons

Solution

The nitrogen atom has 7 protons and 7 electrons,The nitride iron will have7 protons and 10 electrons.
Question 6
1 / -0

The purest form of iron is

A
wrought iron

B
steel

C
pig iron

D
nickel steel

Solution

Wrought Iron is the purest form of iron. It contains 0.12 to 0.25% carbon and so it is the purest form of iron.
Question 7
1 / -0

Which one is not metal

A
sulpher

B
sugar

C
nitogen

D
all of these

Solution

Sulpher/sugar/nitogenis not metal.
Question 8
1 / -0

The M.K.S. system was first introduced by

A
archimedes

B
Eienstein

C
Newton

D
Giorgi

Solution

The M.K.S. system was first introduced by Giorgi.
Question 9
1 / -0

Which one of the following elements is the poorest conductor of heat

A
sodium

B
lead

C
zinc

D
mercury

Solution

Lead elements is the poorest conductor of heat.
Question 10
1 / -0

Cobalt - 60 is commonly used in radiation therapy because it emits

A
alpha - rays

B
beta rays

C
gamma rays

D
X - rays

Solution

Cobalt - 60 is commonly used in radiation therapy because it emits gamma rays.

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Chemistry Test - 59

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Chemistry Test - 59

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SHARING IS CARING

Question 1

Argon

Neon

Carbondioxide

Hydrogen

Solution

Question 2

Potassium Nitrate

Ammonium chloride

Calcium carbonate

Silver lodide

Solution

Question 3

Option 1

Option 2

Option 3

Option 4

Solution

Question 4

1 mole of water molecules

1 mole of ammonia molecules

1 mole of sodium atoms

1 mole of hydrogen molecules

Solution

Question 5

10 protons and 7 electrons

7 protons and 10 electrons

4 protons and 7 electrons

4 protons and 10 electrons

Solution

Question 6

wrought iron

steel

pig iron

nickel steel

Solution

Question 7

sulpher

sugar

nitogen

all of these

Solution

Question 8

archimedes

Eienstein

Newton

Giorgi

Solution

Question 9

sodium

lead

zinc

mercury

Solution

Question 10

alpha - rays

beta rays

gamma rays

X - rays

Solution

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