Chemistry Test

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Chemistry Test - 61

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following is not radioactive

A
Astanine

B
Francium

C
Tritium

D
Zirconium

Solution

Zirconium is not radioactive.
Question 2
1 / -0

The hard Shell of an egg was dissolved in HCL. The egg was then placed in a concentration solution of NaCl. What will happens ______

A
The egg will shrink

B
The egg will swell

C
The egg will become harder

D
There will be hardly any visible change

Solution

The hard Shell of an egg was dissolved in HCL. The egg was then placed in a concentration solution of NaCl. What will happens the egg will shrink.
Question 3
1 / -0

Van der Waal's equation explains the behaviour of _____

A
Ideal gases

B
Real gases

C
Mixture of gases

D
Diatomic gases

Solution

Van der Waal's equation explains the behaviour of real gases.
Question 4
1 / -0

Which pair of atoms has the highest electronegativity difference?
(Calcium's electronegativity is 1.0
Fluorine's electronegativity is 4.0
Hydrogen's electronegativity is 2.2
Sodium's electronegativity is 0.93)

A
F-F

B
Ca-F

C
H-F

D
Na-F

Solution

F-F= 4 - 4 = 0
Ca-F = 4 - 1 = 3.0
H-F = 4 - 2.2 = 1.8
Na-F = 4 - 0.93 = 3.07
Hence, the highest electronegativity difference is in Na-F.
Question 5
1 / -0

Which structural formula represents a dipole?

A
4

B
3

C
2

D
1

Solution

When two atoms in a molecule have substantially different electronegativity: One atom attracts electrons more than another, becoming more negative, while the other atom becomes more positive.
Question 6
1 / -0

Give the common name for the following compound

(CH₃)₂CH CH₂ − Br

A
Isobutyl bromide

B
Methyl bromide

C
Propyl bromide

D
Butyl bromide

Solution

(CH₃)₂CH CH₂ − Br --> Isobutyl bromide
Question 7
1 / -0

Who is the father of modern chemistry?

A
Priestley

B
Lavoisier

C
Dalton

D
Mendeleeff

Solution

Antoine-Laurent de Lavoisier, a french chemist is considered as the "Father of Modern Chemistry."
Question 8
1 / -0

Permanent hardness of water is due to the presence of ?

A
Calcium sulphate

B
Calcium bicarbonate

C
Sodium bicarbonate

D
Magnesium bicarbonate

Solution

Permanent hardness of water is due to the presence of Calcium sulphate.
Question 9
1 / -0

Which of the following is a radioactive element

A
Sulphur

B
Polonium

C
Tellurium

D
Selenium

Solution

Poloniumis a radioactive element.
Question 10
1 / -0

Discovery of the nucleus of an atom was due to the experiment carried out by

A
Bohr

B
Rutherford

C
Moseley

D
Thomson

Solution

Discovery of the nucleus of an atom was due to the experiment carried out by Rutherford.

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Re-Attempt Weekly Quiz Competition

Chemistry Test - 61

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Chemistry Test - 61

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SHARING IS CARING

Question 1

Astanine

Francium

Tritium

Zirconium

Solution

Question 2

The egg will shrink

The egg will swell

The egg will become harder

There will be hardly any visible change

Solution

Question 3

Ideal gases

Real gases

Mixture of gases

Diatomic gases

Solution

Question 4

F-F

Ca-F

H-F

Na-F

Solution

Question 5

4

3

2

1

Solution

Question 6

Isobutyl bromide

Methyl bromide

Propyl bromide

Butyl bromide

Solution

Question 7

Priestley

Lavoisier

Dalton

Mendeleeff

Solution

Question 8

Calcium sulphate

Calcium bicarbonate

Sodium bicarbonate

Magnesium bicarbonate

Solution

Question 9

Sulphur

Polonium

Tellurium

Selenium

Solution

Question 10

Bohr

Rutherford

Moseley

Thomson

Solution

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