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 one of the following is an element?

A) Topaz B) Rruby
C) Diamond D) Sapphire
 
Answer & Explanation Answer: C) Diamond

Explanation:

Here in the given options, Diamond is an element as it is the allotrope of the carbon atom.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

14 8323
Q:

Group 7A of the periodic table contains the

A) most reactive metals B) least reactive non metals
C) most reactive non metals D) least reactive metals
 
Answer & Explanation Answer: C) most reactive non metals

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

3 1370
Q:

Which of the following can be used as lamp oil?

A) Lipids B) Carbohydrates
C) Proteins D) Nucleic acids
 
Answer & Explanation Answer: A) Lipids

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

3 2453
Q:

What element is used to disinfect swimming pools?

A) Fluorine B) Chlorine
C) Bromine D) Sulphur
 
Answer & Explanation Answer: B) Chlorine

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

5 1555
Q:

Strength of concrete increases with

A) increase in fineness of cement B) decrease in size of aggregate
C) increase in water cement ratio D) decrease in curing time
 
Answer & Explanation Answer: C) increase in water cement ratio

Explanation:

Strength of concrete increases with increase in water cement ratio as the strength of the cement is directly proportional to water cement ratio.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

2 2007
Q:

Curdling of milk is an example of

A) Inversion B) Denaturation
C) Hydrolysis D) Coagulation
 
Answer & Explanation Answer: D) Coagulation

Explanation:

Coagulation :: The action or process of a liquid, especially blood, changing to a solid or semi-solid state.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

13 7476
Q:

An acid can be defined as

Answer

An acid can be defined as a molecule or other species which can donate a proton or accept an electron pair in reactions.


(OR)


A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind.

Report Error

View answer Workspace Report Error Discuss

Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

2 1110
Q:

After cleaning the thermometer should be placed in

A) Sanitizer B) Ice cold water
C) Mercury D) None of the above
 
Answer & Explanation Answer: A) Sanitizer

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

3 2036