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:

Of the following radiations, the most easily stopped by air

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

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

2 4265
Q:

Gamma rays are

A) high energy electrons B) low energy electrons
C) high energy electromagnetic D) high energy positrons waves
 
Answer & Explanation Answer: C) high energy electromagnetic

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

1 2521
Q:

A particle which is similar to electron is

A) positron B) beta particle
C) photon D) mason
 
Answer & Explanation Answer: B) beta particle

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

10 6628
Q:

A particle which is four times in mass and two times in charge that of proton is

A) helium atom B) an alpha particle
C) deuteron D) tritium
 
Answer & Explanation Answer: B) an alpha particle

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

3 3866
Q:

Electromagnetic radiation with maximum wavelength is

A) ultraviolet B) radio waves
C) x-rays D) infrared
 
Answer & Explanation Answer: B) radio waves

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

42 10255
Q:

Neutrino has

A) charge +1, mass 1 B) charge 0, mas 0
C) charge -1,mass 1 D) charge 0, mass 1
 
Answer & Explanation Answer: B) charge 0, mas 0

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

5 3975
Q:

Discovery of the nucleus of an atom was due to the experiment carried out by

A) Bohr B) Rutherford
C) Moseley D) Thomson
 
Answer & Explanation Answer: B) Rutherford

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

8 5954
Q:

The charge on positron is equal to the charge on

A) proton B) electron
C) alpha- particle D) neutron
 
Answer & Explanation Answer: A) proton

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

19 8291