Hydrogen Test

Result

Hydrogen Test - 3

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
4 / -1

The most abundant element in the universe is thought to be

A
carbon

B
oxygen

C
hydrogen

D
nitrogen
Question 2
4 / -1

The dielectric constant of H₂O is 80. The electrostatic force of attraction between Na⁺ and Cl^– will be

A
reduced to 1/40 in water than in air

B
reduced to 1/80 in water than in air

C
will be increased to 80 in water than in air

D
will remain unchanged.
Question 3
4 / -1

The volume strength of 1.5 N H₂ O₂ solution is

A
16.8 L

B
8.4 L

C
4.2 L

D
5.2 L
Question 4
4 / -1

Commercial sample of H₂O₂is labeled as 10 V. Its % strength is nearly

A
3

B
6

C
9

D
12

Solution
Question 5
4 / -1

Calgon used as a water softener is

A

B

C

D
Question 6
4 / -1

Permanent hardness can be removed by adding

A
Cl₂

B
Na₂CO₃

C
Ca(OCl) Cl

D
K₂CO₃
Question 7
4 / -1

Which of the following is an example of interstitial hydride ?

A
NH₃

B
CH₄

C
ZnH₂

D
H₂O
Question 8
4 / -1

Which cannot be oxidised by H₂O₂ ?

A
Na₂ SO₃

B
PbS

C
KI

D
O₃
Question 9
4 / -1

The volume of oxygen liberated from 0.68 g of H₂O₂ is

A
112 mL

B
224 mL

C
56 mL

D
336 mL
Question 10
4 / -1

K_a of H₂ O₂ is of the order of

A
10^-12

B
10^-14

C
10^-16

D
10^-10