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 elements has the lowest melting point?

A) Bromine B) Zinc
C) Lead D) Calcium
 
Answer & Explanation Answer: A) Bromine

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 915
Q:

What is the base of the Octal Numeral System?

A) 8 B) 16
C) 32 D) 64
 
Answer & Explanation Answer: A) 8

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 978
Q:

The (O-H) bond in CH3OH is _____.

A) polar covalent B) ionic
C) non polar covalent D) cationic
 
Answer & Explanation Answer: A) polar covalent

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

5 1581
Q:

Adding which substance gives blue colour to glass?

A) Manganese oxide B) Cobalt oxide
C) Chromium oxide D) Iron oxide
 
Answer & Explanation Answer: B) Cobalt oxide

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1407
Q:

The conversion of hard water into soft water by boiling or adding calcium hydroxide is called _______.

A) Baker's process B) Temp's process
C) Clarke's process D) Lake's process
 
Answer & Explanation Answer: C) Clarke's process

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 1203
Q:

Name the acid present in lemon.

A) Phosphoric acid B) Carbonic acid
C) Citric acid D) Malic acid
 
Answer & Explanation Answer: C) Citric acid

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 992
Q:

The poisonous gas accidentally released in Bhopal Gas Tragedy is

A) Methane B) Nitrous Oxide
C) Methyl Isocyanate D) Cyanogen
 
Answer & Explanation Answer: C) Methyl Isocyanate

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

2 905
Q:

Which among the following compounds has the strongest hydrogen bond?

A) HI B) HCl
C) HF D) HBr
 
Answer & Explanation Answer: C) HF

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 1159