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:

What is the chemical name of chalk?

A) Calcium Sulphate B) Calcium Nitrate
C) Calcium Carbonate D) Calcium Phosphide
 
Answer & Explanation Answer: C) Calcium Carbonate

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 830
Q:

Which of the following is not the properties of an ionic compound?

A) Soluble in water and insoluble in petrol B) High melting and boiling points
C) Low melting and boiling points D) Solid and hard
 
Answer & Explanation Answer: C) Low melting and boiling points

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 683
Q:

Which one of the following is a cation?

A) Carbonate B) Nitrate
C) Ammonium D) Hydroxide
 
Answer & Explanation Answer: C) Ammonium

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 878
Q:

Which of the following scientists gave the law that governs the force of attraction/repulsion between two charged particles?

A) Charles Dufay B) Michael Faraday
C) Archimedes D) Charles Coulomb
 
Answer & Explanation Answer: D) Charles Coulomb

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 718
Q:

Which compound is formed when a Magnesium ribbon is burnt in air?

A) Magnesium Nitrate B) Magnesium Carbonate
C) Magnesium Oxide D) Magnesium Nitride
 
Answer & Explanation Answer: C) Magnesium Oxide

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 731
Q:

What are transition elements?

A) Elements whose two outermost shells are incomplete B) Elements which possess properties of both, metals and non-metals
C) They have eight electrons in the outermost shell D) Elements whose three outermost shells are incomplete
 
Answer & Explanation Answer: A) Elements whose two outermost shells are incomplete

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 582
Q:

Which one of the following statements would be INCORRECT to use?

 

A) An atom of a compound B) A mole of an element
C) A mole of a compound D) An atom of an element
 
Answer & Explanation Answer: A) An atom of a compound

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 13891
Q:

Which of the following gases turns lime water milky?

A) O3 B) CO2
C) O2 D) CO
 
Answer & Explanation Answer: B) CO2

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 764