Hydrogen Test

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Hydrogen Test - 31

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Weekly Quiz Competition

Question 1
1 / -0

All of the following are isotopes of hydrogen except:

A
tritium

B
hydronium

C
protium

D
deuterium

Solution

Hydrogen has the following three isotopes which are naturally occurring.
$${ H }^{ 1 }-\text{Protium}\\ { H }^{ 2 }-\text{Deuterium}\\ { H }^{ 3 }-\text{tritium}$$
Hydronium ion, $${ H }_{ 3 }{ O }^{ + }$$ is not an isotope of hydrogen.
Question 2
1 / -0

Hydrogen differs from elements of VII-A group as:

A
it can gain one electron

B
it has one electron in its valence shell

C
its electronic configuration is different from other elements

D
both $$B$$ and $$C$$

Solution

Hydrogen differs from elements of $$VII-A$$ group as:

(A) Hydrogen can either share or gain or lose one electron whereas the elements of $$VII-A$$ group can gain one electron.

(B) Hydrogen has one electron in its valence shell whereas elements of $$VII-A$$ group have 7 valence electrons.

(C) The electronic configuration of hydrogen is different from the elements of $$VII-A$$ group.

So, options B and C are the correct answers.
Question 3
1 / -0

The element symbol for hydrogen is:

A
K

B
H

C
He

D
Hn

Solution

Hydrogen is a chemical element with chemical symbol H and atomic no. 1 with atomic weight 1.00794 amu,hydrogen is the lightest element on the periodic table. Its monatomic form is the most abundant in nature.
Question 4
1 / -0

Among I-A elements which is the only non-metal?

A
Hydrogen

B
Lithium

C
Sodium

D
Potassium

Solution

In alkali metals group, hydrogen is the only non metal diatomic hydrogen gas.
Question 5
1 / -0

Zinc reacts with steam to form a residue which is yellow when hot and white when cold. Guess the residue.

A
$$ZnO_2$$

B
$$ZnO$$

C
$$Zn(OH)_2$$

D
$$ZnH_2$$

Solution

Zinc reacts with steam to form zinc oxide which is yellow when hot and white when cold.
Question 6
1 / -0

Sodium reacts with cold water to form a compound that burns with a flame. Guess the colour of flame.

A
Lilac

B
Golden yellow

C
Brick red

D
White

Solution

Sodium reacts with cold water to form a compound that burns with a golden yellow flame.
Question 7
1 / -0

Why water is called an universal solvent?

A
Because plants use water for taking minerals from the soil

B
Water can dissolve a wide variety of substances

C
Water is clear and transparent

D
None of the above

Solution

Water can dissolve a wide variety of substances that is why water is known as a universal solvent. Plant use this property of water for taking minerals from the soil.
Question 8
1 / -0

The uses of water are:

A
It is used as a universal solvent

B
It constitutes a major part of human body

C
It is used for controlling climatic conditions

D
All of the above
Solution
The uses of water are:
It is used as a universal solvent
It constitutes a major part of human body
It is used for climate control
Question 9
1 / -0

Calculate the normality of $$10$$ volume $$H_{2}O_{2}$$:

A
$$1.78\ N$$

B
$$12\ N$$

C
$$30.3\ N$$

D
$$0.0303\ N$$

Solution

Normality of $$10\ V$$ of $$H_{2}O_{2}$$

$$\dfrac {68\times 10}{22.4} = 17\times N \therefore N = 1.78$$
Question 10
1 / -0

Among the following elements, which one has the highest ionisation potential?

A
Hydrogen

B
Lithium

C
Potassium

D
Sodium

Solution

Ionization potential is the amount of energy required to remove an electron from an atom or a molecule in the gaseous state. Hydrogen has only one electron in its valence shell or s orbital and ionisation energy decreases from top to bottom in a group as the atomic size increases and as electron cloud goes farther away from the nucleus. So, hydrogen has the highest ionisation potential.

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Re-Attempt Weekly Quiz Competition

Hydrogen Test - 31

Result

Hydrogen Test - 31

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SHARING IS CARING

Question 1

tritium

hydronium

protium

deuterium

Solution

Question 2

it can gain one electron

it has one electron in its valence shell

its electronic configuration is different from other elements

both $$B$$ and $$C$$

Solution

Question 3

K

H

He

Hn

Solution

Question 4

Hydrogen

Lithium

Sodium

Potassium

Solution

Question 5

$$ZnO_2$$

$$ZnO$$

$$Zn(OH)_2$$

$$ZnH_2$$

Solution

Question 6

Lilac

Golden yellow

Brick red

White

Solution

Question 7

Because plants use water for taking minerals from the soil

Water can dissolve a wide variety of substances

Water is clear and transparent

None of the above

Solution

Question 8

It is used as a universal solvent

It constitutes a major part of human body

It is used for controlling climatic conditions

All of the above

Solution

Question 9

$$1.78\ N$$

$$12\ N$$

$$30.3\ N$$

$$0.0303\ N$$

Solution

Question 10

Hydrogen

Lithium

Potassium

Sodium

Solution

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