Hydrogen Test

Result

Hydrogen Test - 51

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

In the reaction $$2H_2O \rightleftarrows H_3O^+ +OH^-$$, water is:

A
A weak base

B
A weak acid

C
Both a weak acid and a weak base

D
Neither an acid nor a base

Solution

Because their conjugate base and conjugate acids are strong.
Question 2
1 / -0

Hydrogen can be put in halogen group because

A
It has deuterium and tritium as isotopers

B
It forms hydrides like chlorides

C
It contains one electron only

D
It is light

Solution

Hydrogen forms hydrides like chlorides such as $$NaH$$ and $$LiH$$.
Question 3
1 / -0

Water is a

A
Amphoteric in nature

B
Aprotic solvent

C
Protophobic solvent

D
None of these
Solution
Water is the most common protic solvent.
Water is an Amphiprotic solvent as it can accept protons as well as give protons.
water molecule has hydrogen atoms and, therefore, could act as an acid in a reaction. Since water has the potential to act both as an acid and as a base, $$\text{water is amphoteric}$$
thus, A is the correct answer.
Question 4
1 / -0

Hydrogen by donating one electron forms $$H^+$$. In this property, it resembles with

A
Transitional elements

B
Alkaline earth metals

C
Alkali metals

D
Halogens

Solution

Alkali metals have one electron in outermost orbital. They can easily remove an electron to attain noble gas configuration. Hence properties of $$H^{+}$$ resemble with alkali metal.
Question 5
1 / -0

Which of the followings explanation is best for

A
The ionization energy of hydrogen is too high for group of alkali metals but too low of halogens group

B
Hydrogen can form compounds with all other elements

C
Hydrogen is much lighter than the alkali metals or the halogens

D
None of these

Solution

Ionization of hydrogen is too high for alkali metals and low for halogens. Halogens have more tendency to gain an electron to attain noble gas configuration rather than losing an electron. That's why halogens have high ionization energy.
Question 6
1 / -0

The oxidation number of hydrogen in $${MH}_{2}$$ is

A
$$+1$$

B
$$-1$$

C
$$+2$$

D
$$-2$$

Solution

In all alkali and alkaline earth metal hydride hydrogen always shows $$-1$$ oxidation state
Question 7
1 / -0

In $$C+{H}_{2}O\rightarrow CO+{H}_{2},\ {H}_{2}O$$ acts as

A
Oxidising agent

B
Rducing agent

C
(A) and (B) both

D
None of these

Solution

$$C+{H}_{2}O\rightarrow CO+{H}_{2}$$

In the above reaction, $${H}_{2}O$$ acts as oxidising agent since it oxidises $$C$$ to $$CO$$.
Question 8
1 / -0

Heavy water freezes at

A
$$0^\circ C$$

B
$$3.8^\circ C$$

C
$$38^\circ C$$

D
$$-0.38^\circ C$$

Solution

$$\text{Freezing point of heavy water is }3.8^oC.$$ Heavy water is a form of water that contains a larger than normal amount of the hydrogen isotope deuterium, rather than the common hydrogen- $1$ isotope that makes up most of the hydrogen in regular water.
Question 9
1 / -0

Which of the following reaction produces hydrogen?

A
$$ Mg+H_{2}O $$

B
$$ BaO_{2}+HCl $$

C
$$ H_{2}S_{4}O_{8}+H_{2}O $$

D
$$ Na_{2}O_{2}+2HCl $$

Solution

Alkali and alkaline earth metals react with water to produce hydrogen gas and metal hydroxide. This is due to their high electropositive character.

$$ Mg+H_{2}O \rightarrow Mg(OH)_2 + H_2$$

Hence correct ans is option (A).
Question 10
1 / -0

Hydrogen is

A
electropositive

B
electronegative

C
both electropositive as well as electronegative

D
neither electropositive nor electronegative

Solution

Hydrogen is both electropositive as well as electronegative.
Like alkali metals, $$H$$ has tendency to lose its one valency electron to form unipositive hydrogen ion $$H^+$$.
Hence, hydrogen is electropositive in nature.
Like halogens, hydrogen has tendency to gain one electron and form uninegative ion $$H^−$$.
Hence, hydrogen is electronegative in nature.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Hydrogen Test - 51

Result

Hydrogen Test - 51

Score

-

Rank

-

SHARING IS CARING

Question 1

A weak base

A weak acid

Both a weak acid and a weak base

Neither an acid nor a base

Solution

Question 2

It has deuterium and tritium as isotopers

It forms hydrides like chlorides

It contains one electron only

It is light

Solution

Question 3

Amphoteric in nature

Aprotic solvent

Protophobic solvent

None of these

Solution

Question 4

Transitional elements

Alkaline earth metals

Alkali metals

Halogens

Solution

Question 5

The ionization energy of hydrogen is too high for group of alkali metals but too low of halogens group

Hydrogen can form compounds with all other elements

Hydrogen is much lighter than the alkali metals or the halogens

None of these

Solution

Question 6

$$+1$$

$$-1$$

$$+2$$

$$-2$$

Solution

Question 7

Oxidising agent

Rducing agent

(A) and (B) both

None of these

Solution

Question 8

$$0^\circ C$$

$$3.8^\circ C$$

$$38^\circ C$$

$$-0.38^\circ C$$

Solution

Question 9

$$ Mg+H_{2}O $$

$$ BaO_{2}+HCl $$

$$ H_{2}S_{4}O_{8}+H_{2}O $$

$$ Na_{2}O_{2}+2HCl $$

Solution

Question 10

electropositive

electronegative

both electropositive as well as electronegative

neither electropositive nor electronegative

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.