The List-I with List-II 
 
List-I
(Hydride)
List-II
(Type of Hydride)
A NaH (I) Electron precise
B PH3 (II) Saline
C GeH4 (III) Metallic
D LaH2.87 (IV) Electron rich

Choose the correct answer from the options given below: 
Options: (A) (B) (C) (D)
1. III IV II I
2. II III IV I
3. I III II IV
4. II IV I III

Subtopic:  Type of Hydride |
 59%
From NCERT
NEET - 2023
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Which of the following statements is NOT correct?
A. Hydrogen is used to reduce heavy metal oxides to metals. 
B. Heavy water is used to study the reaction mechanism. 
C. Hydrogen is used to make saturated fats from oils. 
D. The H-H bond dissociation enthalpy is lowest as compared to a single bond between two atoms of any element. 
E. Hydrogen reduces oxides of metals that are more active than iron. 
Choose the most appropriate answer from the options given below: 
1. A, B, C only  2. B, C, D, E only 
3. B, D only  4. D, E only 
Subtopic:  Preparation & Properties |
From NCERT
NEET - 2023
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The element used for welding metals with high melting points is:
1.  Cl2
2.  H2
3.  Ne
4.  He
Subtopic:  Preparation & Properties |
 69%
From NCERT
NEET - 2022
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Match list-I with list-II:

List-I
(Commercial name)
List-II
(Chemical name)
(a) Calgon (i) Sodium aluminium silicate (hydrated)
(b) Permutit (ii) Sodium carbonate
(c) Soap (iii) Sodium hexameta-phosphate
(d) Washing soda (iv) Sodium stearate
 

Choose the correct answer from the options given below:

(a) (b) (c) (d)
1. (i) (iv) (ii) (iii)
2. (iii) (i) (iv) (ii)
3. (ii) (iii) (iv) (i)
4. (iv) (iii) (i) (ii)
Subtopic:  Hard & Soft Water |
 84%
From NCERT
NEET - 2022
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Match List - I with List - II.

List-I
(Hydrides)
List - II
(Nature)
(a) MgH2 (i) Electron precise
(b) GeH4 (ii) Electron deficient
(c) B2H6 (iii) Electron rich
(d) HF (iv) Ionic
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iv) (i) (ii) (iii)
3. (iii) (i) (ii) (iv)
4. (i) (ii) (iv) (iii)
Subtopic:  Type of Hydride |
 60%
From NCERT
NEET - 2022
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Tritium, a radioactive isotope of hydrogen, emits which of the following particles?

1. Gamma (γ)

2. Neutron (n)

3. Beta β-

4. Alpha (α)

Subtopic:  Hydrogen- Types & Isotopes |
 65%
From NCERT
NEET - 2021
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Pure water can be obtained from sea water by:

1.  Centrifugation
2.  Plasmolysis
3.  Reverse osmosis
4.  Sedimentation

Subtopic:  Water |
 77%
From NCERT
AIPMT - 2001
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 H2Oon oxidation gives:

1. O-2

2. OH-

3. O2-

4. O2

Subtopic:  H2O2 (Hydrogen Peroxide) |
 58%
From NCERT
AIPMT - 1999
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The pair that on reaction will not evolve H2 gas is  

1.  Copper and HCl (aqueous)
2.  Iron and steam
3.  Iron and H2SO4 (aqueous)
4.  Sodium and ethyl alcohol

Subtopic:  Preparation & Properties |
 54%
From NCERT
AIPMT - 1998
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Some statements about water are given below:
 

(a) Heavy water is used as a moderator in nuclear reactors.
(b) Heavy water is more associated than ordinary water.
(c) Heavy water is a more effective solvent than ordinary water.
 

Which of the above statements are correct?

1. (a), (b), and (c)

2. (b) and (c)

3. (a) and (c)

4. (a) and (b)

Subtopic:  Hydrogen- Types & Isotopes |
 61%
From NCERT
AIPMT - 2010
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