Sawaal
13
Q:

Which of the following reactions are exothermic?

 

1)   C + O2  → CO22)  2Mg + O2  → 2MgO3)  CuSO4 + 5H2O  → CuSO4.5H2O4)  All the above

A) 1 B) 2
C) 3 D) 4

Answer:   D) 4



Explanation:

Here all the given options are Exothermic reactions. Exothermic reactions are those reactions which involves the release of heat.

 

Generally all the combining reactions are exothermic in nature.

Subject: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO
Related Questions
Q:

In nuclear reactor the speed of neutrons is slowed down by

A) heavy water B) ordinary water
C) Zinc rods D) molten caustic soda
 
Answer & Explanation Answer: A) heavy water

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

12 8122
Q:

Hydrogen bomb is based on the principle of  

A) nuclear fission B) nuclear fusion
C) natural radioactivity D) artificial radioactivity
 
Answer & Explanation Answer: B) nuclear fusion

Explanation:

Hydrogen Bomb is based on the principle of Nuclear Fusion.

Hydrogen_bomb_is_based_on_the_principle_of1552385714.jpg image

 

  • Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

 

  • The difference in mass between the reactants and products is manifested as either the release or absorption of energy.
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

484 75489
Q:

When the nucleus of  Uranium is bombarded with neutrons, it breaks up into two nuclei of nearly equal mass. this process is called

A) nuclear fission B) nuclear fusion
C) physical change D) artificial radioactivity
 
Answer & Explanation Answer: A) nuclear fission

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

2 3818
Q:

The first indication that a stable nucleus can be broken down was afforded by

A) Rutherford B) Madam Curie
C) Soddy D) Schmidt
 
Answer & Explanation Answer: A) Rutherford

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

12 5580
Q:

Group displacement law was given by

A) Bacquerel B) Rutherford
C) Mendeleaf D) Soddy and Fajan
 
Answer & Explanation Answer: D) Soddy and Fajan

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

8 4979
Q:

Who present the theory of radioactive disintegration

A) Rutherford and Soddy B) Soddy and Fajan
C) Thomson and Rutherford D) Hahn and strassman
 
Answer & Explanation Answer: A) Rutherford and Soddy

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

7 4860
Q:

Which of the following does not contain the material particles

A) alpha - rays B) beta - rays
C) gamma - rays D) anode rays
 
Answer & Explanation Answer: C) gamma - rays

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

16 6835
Q:

A device used for the measurement of radioactivity is

A) mass spectrometer B) cyclotron
C) nuclear reactor D) G.M.counter
 
Answer & Explanation Answer: D) G.M.counter

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

13 7109