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:

Match the following items.

A) I – 2, II – 3, III – 4, IV – 1 B) I – 2, II – 3, III – 1, IV – 4
C) I – 3, II – 2, III – 1, IV – 4 D) I – 2, II – 1, III – 3, IV – 4
 
Answer & Explanation Answer: A) I – 2, II – 3, III – 4, IV – 1

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 834
Q:

Which process forms exfoliation domes?

A) biological activity B) frost wedging
C) unloading D) reactions with oxygen
 
Answer & Explanation Answer: D) reactions with oxygen

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1216
Q:

In which of the following solution the concentration of H+ ion is the maximum?

A) pH 6 B) pH 8
C) pH 5 D) pH 9
 
Answer & Explanation Answer: C) pH 5

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 846
Q:

What is the weight of one mole Carbon atoms?

A) 12 gm B) 120 gm
C) 1.2 gm D) 0.12 gm
 
Answer & Explanation Answer: A) 12 gm

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 920
Q:

Which of the following is NOT correctly matched?

A) Sandstone - conglomerate   B) Limestone - Marble  
C) Granite - Basalt   D) Gabbro - Serpentine  
 
Answer & Explanation Answer: A) Sandstone - conglomerate  

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 803
Q:

All phosphorus atoms have the same

A) Mass number B) Number of neutrons plus the number of electrons
C) Atomic number D) Number of neutrons plus the number of protons
 
Answer & Explanation Answer: C) Atomic number

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

3 1823
Q:

Baking soda is used ______.

 

I. for making baking powder

II. in soda-acid fire extinguishers

III. to neutralize excess acid in the stomach

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: D) All I, II and III

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

2 8499
Q:

Which of the following is NOT a nucleon?

A) Proton B) Electron
C) Neutron D) No option is correct
 
Answer & Explanation Answer: B) Electron

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

4 1415