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 NOT the combined from of carbon?

A) Diamond B) Dolomite
C) Marble D) Chalk
 
Answer & Explanation Answer: A) Diamond

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 828
Q:

Atomic numbers of four elements are as follows : F(9), P(15), Cl(17), Ar(18). Which of the following two elements would be chemically similar?

A) F and Ar B) Cl and P
C) F and P D) F and Cl
 
Answer & Explanation Answer: D) F and Cl

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 797
Q:

Factors that may influence enzyme activity?

 

A) pH B) Substrate concentration
C) Temperature D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 6039
Q:

Which term describes an enzyme?

A) reactant B) catalyst
C) substrate D) product
 
Answer & Explanation Answer: B) catalyst

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 725
Q:

In a combination reaction there can be ______.

 

I. two or more than two reactants

II. two or more than two products

III. only one product

 

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

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 14870
Q:

Which statement(s) is/are CORRECT regarding Dalton’s Atomic theory?

 

I. All matters are made of very tiny particles.

II. Atoms of different elements have different masses and chemical properties.

III. The relative number of atoms is variable in any compound.

 

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

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 13965
Q:

In the Modern Periodic Table, elements are arranged in

A) increasing atomic mass number B) increasing atomic number
C) decreasing atomic mass number D) decreasing atomic number
 
Answer & Explanation Answer: B) increasing atomic number

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 724
Q:

Which of the following metals is the most Malleable?

A) Al B) Zn
C) Na D) Ag
 
Answer & Explanation Answer: C) Na

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 766