Default Title

Questions

Question (31)

QN004856

A matka cools water best when:

(A) Kept inside fridge
(B) Kept in dry windy place
(C) Painted with plastic coating
(D) Fully sealed

Correct Answer: B

Explanation:

Wind increases evaporation from pores.

Link:

Report Error

Question (32)

QN004857

A wet roof is cooled more when water is sprinkled repeatedly because:

(A) It increases evaporation cycles
(B) It reduces air movement
(C) It stops sunlight
(D) It increases humidity

Correct Answer: A

Explanation:

Repeated wetting enhances evaporation.

Link:

Report Error

Question (33)

QN004858

If two identical wet surfaces are kept, one covered and one uncovered, cooling is higher in:

(A) Covered surface
(B) Uncovered surface
(C) Both equal
(D) Neither cools

Correct Answer: B

Explanation:

Uncovered surface allows evaporation.

Link:

Report Error

Question (34)

QN004859

A student uses wet jute sack on pot-in-pot cooler lid because it:

(A) Stops evaporation
(B) Helps maintain moisture and cooling
(C) Heats water
(D) Blocks air completely

Correct Answer: B

Explanation:

Moist jute helps continuous evaporation cooling.

Link:

Report Error

Question (35)

QN004860

The main energy change in evaporation-based cooling is:

(A) Heat is released into surroundings
(B) Heat is absorbed from surroundings
(C) Light energy increases
(D) Sound energy increases

Correct Answer: B

Explanation:

Heat is absorbed during evaporation.

Link:

Report Error

Question (36)

QN004861

Cooling effect of evaporation is strongest when:

(A) High humidity and no wind
(B) Low temperature and still air
(C) Large surface area and wind present
(D) Closed container

Correct Answer: C

Explanation:

Maximum evaporation occurs with wind and surface area.

Link:

Report Error

Excel With Tutors

Learn At Your Own Pace... Because, Everyone's Pace of Learning is Different...

ExcelWithTutors

A unit of Innovexcel Edu Solution LLP.

SWIFT, RELIABLE & CONVENIENT..

Social Media

Corporate Office :
Bharat Impact Building, C-26, Sector - 59, Noida, Uttar Pradesh - 201301, India

For Student

For Tutors

OUR POLICY

Excel With Tutors : A Perfect Tutoring Platform & Repository of Learning Materials. Matches the Best Tutor as Per Your Requirement.