20
Q:

# Fish and other aquatic creatures can live inside a deep frozen pond because

 A) fish are cold-blooded animals B) ice is a bad conductor of heat C) there will always be water just beneath the ice level D) they can adapt themselves to live in ice

Answer:   C) there will always be water just beneath the ice level

Explanation:

Water has the maximum density at $4oC$. So at this temperature, it sinks down to bottom and stays here. If it cools further, it will become less dense and move up. So while the upper layers can cool enough to form ice, the bottom layers remain as water at  $4oC$ .

Therefore, (C) is correct.

Subject: Physics
Exam Prep: CAT , AIEEE
Job Role: Analyst
Q:

What is the noise level of normal conversation?

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

3 265
Q:

As an object falls freely its ___________________.

 A) kinetic energy gets converted into potential energy B) potential energy gets converted into kinetic energy C) momentum gets converted into gravitational force D) gravitational force gets converted into momentum

Answer & Explanation Answer: B) potential energy gets converted into kinetic energy

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 7774
Q:

Due to an acceleration of 1  $m/s2$, the velocity of a body increases from 5 m/s to 10 m/s in a certain period. Find the displacement (in m) of the body in  that period.

 A) 125 B) 37.5 C) 62.5 D) 75

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

2 297
Q:

What is measured with the Nephometer?

 A) volume of rainfall B) Cloud volume and speed C) Salinity of Sea D) All options are correct.

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 3151
Q:

What is the standard room temperature in Kelvin?

 A) 98 K B) 198 K C) 273 K D) 373 K

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 1896
Q:

An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is

 A) 16 m/s B) 8 m/s C) 32 m/s D) 4 m/s

Explanation:

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

1 221
Q:

1 watt is equal to 1 ____________

 A) J s-1 B) J s C) J s-2 D) J

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 3483
Q:

A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds.

 A)  25 B)  37.5 C)  50 D)  75