Which of the following metal cannot absorb hydrogen –

(1) Pd                                     

(2) Al

(3) Ni                                     

(4) Co

Subtopic:  Hydrogen- Types & Isotopes |
 62%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The best explanation for not placing hydrogen with the group of alkali metals or halogens is.

1. Hydrogen can form compounds with all other elements

2. Hydrogen is much lighter element than the alkali metals or the halogens

3. The IE of hydrogen is too high for group of alkali metals but too low for halogen group

4. None of these

Subtopic:  Hydrogen- Types & Isotopes | Preparation & Properties |
 63%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The colour of hydrogen is –

1. Blue                           

2. Yellow

3. Orange                       

4. No colour

Subtopic:  Hydrogen- Types & Isotopes |
 91%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In which of the following compounds, hydrogen exists in the atomic state –

1. Metallic hydrides                           

2. Ionic hydrides

3. Molecular hydrides                       

4. Water

Subtopic:  Hydrogen- Types & Isotopes | Preparation & Properties |
 52%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

H12 stands for –

(1) Protium                               

(2) Heavy water

(3) Deuterium                           

(4) Tritium

Subtopic:  Hydrogen- Types & Isotopes |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A substance gives off O2 when heated, turns an acid solution of KI violet, and reduces acidified KMnO4. The substance is –

1. SO3                            

2. KNO3

3. H2O2                          

4. All of these

Subtopic:  H2O2 (Hydrogen Peroxide) |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

100 ml of a sample of hard water required 25.1 ml of 0.02 (N) H2SO4 for complete reaction. What is the hardness of the given water sample ? (sp. gravity of given water sample = 1 gm/ml)

(A) 200 ppm                                 

(B) 250 ppm

(C) 251 ppm                                 

(D) 258 ppm

Subtopic:  Hard & Soft Water |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A mixture of hydrazine N2H4 and 58-60% solution of H2O2 is used as.

(1) Antiseptic                     

(2) Fertilizer

(3) Rocket fuel                   

(4) None

Subtopic:  H2O2 (Hydrogen Peroxide) |
 76%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

50 lit of hard water of 120 ppm temporary hardness is mixed with 1.62 kg of CaOH2, what is the hardness of the resulting water ? (The sp. gr. of hard water = 1 gm/ml)

(A) 8.088 × 105 ppm                               

(B) 8.088 × 104 ppm

(C) 80 ppm                                             

(D) 808 ppm

Subtopic:  Hard & Soft Water |
 60%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Commercially H2O2 is now prepared by –

(A) Action of H2SO4 on barium peroxide

(B) Action of H2SO4 on sodium peroxide

(C) Electrolysis of H2SO4

(D) By burning hydrogen in excess of oxygen

Subtopic:  H2O2 (Hydrogen Peroxide) |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints