Para hydrogen is-

1. Less stable than ortho hydrogen.

2. More stable than ortho hydrogen.

3. As stable as ortho hydrogen.

4. None of the above.

Subtopic:  Hydrogen- Types & Isotopes |
 55%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links

Hydrogen combines directly with:

(a) Ca

(b) Cu

(c) Zn

(d) Fe

Subtopic:  Preparation & Properties |
 67%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Acidified solution of chromic acid on treatement with H2O2 yields :

(a) CrO3 + H2O + O2

(b) Cr2O2 + H2O + O2

(c) CrO5 + H2O + K2SO4

(d) H2Cr2O7 + H2O + O2

Subtopic:  H2O2 (Hydrogen Peroxide) |
 54%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

The ortho and para hydrogen possess:

(a) same physical properties but different chemical properties

(b) different physical properties but same chemical properties

(c) same chemical and physical properties

(d) different physical and chemical properties

Subtopic:  Hydrogen- Types & Isotopes |
 62%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

On bubbling CO2 through a solution of barium peroxide in water:

(1) O2 is formed

(2) H2CO3 is formed

(3) H2O2 is formed

(4) H2 is formed

Subtopic:  H2O2 (Hydrogen Peroxide) |
 76%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

A mixture of hydrazine and 60 to 90 percent of H2O2 solution is:

(a) antiseptic

(b) rocket fuel

(c) germicide

(d) insecticide

Subtopic:  H2O2 (Hydrogen Peroxide) |
 60%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

A given solution of H2O2 is 30 volume. Its concentration in terms of molarity is:

(a) 9.1 M

(b) 2.68 M

(c) 2.5 M

(d) 26.8 M

Subtopic:  H2O2 (Hydrogen Peroxide) |
 70%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Decomposition of H2O2 is accelerated by:

(a) traces of acids

(b) finely divided metals

(c) acetanilide

(d) alcohol

Subtopic:  H2O2 (Hydrogen Peroxide) |
 70%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Which method cannot be used to remove hardness of water ?

(1) Clark's method

(2) By adding washing soda

(3) Calgon process

(4) Filtration

Subtopic:  Hard & Soft Water |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

In which reaction hydrogen is not formed ?

(1) Copper and hydrochloric acid

(2) Iron and sulphuric acid

(3) Magnesium and steam

(4) Sodium and alcohol

Subtopic:  Preparation & Properties |
 54%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints