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

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

advertisementadvertisement

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

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

Which conversion is not done by H2O2 ?

(1) Fe2+         Fe3+(acidic medium)

(2) PbS         PbSO4

(3) Fe1+         Fe3+ (alkaline medium)

(4) KI         I2

Subtopic:  H2O2 (Hydrogen Peroxide) |
 71%
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

H2O2 restores the colour of old lead paintings, blackened by the action of H2S gas, by:

(1) converting PbO2 to Pb

(2) oxidising PbS to PbSO4

(3) converting PbCO3 to Pb

(4) oxidizing PbSO3 to PbSO4

Subtopic:  H2O2 (Hydrogen Peroxide) |
 82%
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

(I) H2O2+O3           H2O + 2O2

(II) H2O2 + Ag2O           2Ag + H2O + O2

Role of hydrogen peroxide in the above reactions is respectively

(a) oxidising in (I) and reducing in (II)

(b) reducing in (I) and oxidising in (II)

(c) reducing in(I) and  (II)

(d) oxidising in(I) and (II)

Subtopic:  H2O2 (Hydrogen Peroxide) |
 53%
NEET - 2014
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

In acidic medium, H2O2 changes Cr2O72- to CrO5 which has two (-O-O-) bonds. Oxidation state of Cr in CrO5 is

(a) +5

(b) +3

(c) +6

(d) -10

Subtopic:  Hydrogen- Types & Isotopes | H2O2 (Hydrogen Peroxide) |
 76%
NEET - 2014
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Nascent hydrogen consists of -

(A) Hydrogen atoms with excess energy

(B) Hydrogen molecules with excess energy

(C) Hydrogen ions in the excited state

(D) Solvated protons

Subtopic:  Hydrogen- Types & Isotopes |
 71%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints