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:

Which of the following is a natural polymer?

A) Bakelite B) Nylon
C) Polythene D) Starch
 
Answer & Explanation Answer: D) Starch

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 982
Q:

At low temperature, Lead behaves as a :

A) Semi conductor B) Super conductor
C) Insulator D) Conductor
 
Answer & Explanation Answer: B) Super conductor

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1528
Q:

Turquoise is an ore/mineral of

A) Copper B) Manganese
C) Mercury D) Tin
 
Answer & Explanation Answer: A) Copper

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1333
Q:

Which among the following is not a characteristic of oxidation reaction?

A) It involves addition of hydrogen B) It involves addition of oxygen
C) It involves loss of electrons D) 4) It involves addition of electronegative element
 
Answer & Explanation Answer: A) It involves addition of hydrogen

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 915
Q:

Which among the following is false about alpha particles?

A) They have high ionizing power B) They have high penetrating power
C) They have high kinetic energy D) They are positively charged helium nuclei
 
Answer & Explanation Answer: B) They have high penetrating power

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1517
Q:

Chromite is an ore/mineral of

A) Zinc B) Uranium
C) Chromium D) Titanium
 
Answer & Explanation Answer: C) Chromium

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1037
Q:

Aromatic hydrocarbons contain at least _____ benzene like ring in their molecules.

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: D) 1

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1019
Q:

What is the full form of PVC?

A) Phosphonil vinyl Carbonate B) Polyvinyl S Carbonate
C) Polyvinyl Carbonate D) Polyvinyl Chloride
 
Answer & Explanation Answer: D) Polyvinyl Chloride

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 833