Basic Science Test 25

Result

Basic Science Test 25

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The speed of a car weighing 1500 kgs increases from 36 km/hr to 72 km/hr uniformly. What will be the change in the momentum of car?

A
15000 kg km/hr

B
15000 kg m/s

C
54000 kg m/s

D
54000 g m/s

Solution

The weight of the car is 1500 kg .

The initial Velocity of the car is 36 kmph

The final Velocity of the car is 72 kmph .

So ,

Change in velocity of car -

∆V

=> 72 - 46

=> 36 kmph

Now

The mass of the car is 1500 kg

Change In Momentum

=> mv² - mv¹

=> m ( v² - v ¹ )

=> m ∆ v

=> 1500 × 36 kg kmph

=> 5400 kg kmph

Now, none of the options matches let change the units.

So ,

Initial Velocity

=> 36 kmph

=> 36 × ( 5 / 18 ) m /s.

=> 10 m / s.

Final velocity

=> 72 kmph

=> 72 × ( 5 / 18 ) m / s

=> 20 m /s.

∆ V

=> 10 m / s

Change in Momentum -

=> m ∆ v

=> 1500 × 10 kg m / s

=> 15000 kg m / s.
Question 2
1 / -0

Which of the following is a standard unit of measurement of land ?

A
hectare

B
bigha

C
guintha

D
none
Question 3
1 / -0

Which of the following statement is correct regarding velocity and speed of a moving body?

A
Velocity of a moving body is always higher than its speed.

B
Speed of a moving body is always higher than its velocity

C
Speed of a moving body is its velocity in a given direction

D
Velocity of a moving body is its speed in a given direction

Solution

Speed of a moving body is always higher than velocity. Speed of a moving body is its velocity in a given direction. Velocity of a moving body is its speed in a given direction.
Question 4
1 / -0

The SI unit of measuring momentum of a moving body is

A
$$ms^1$$

B
$$kg/ms$$

C
$$kgms^{-1}$$

D
$$kgm's$$

Solution

(C) $$kgms^{-1}$$
Question 5
1 / -0

Which of the following statement marks as a difference between plant cell and animal cell?

A
Plant cells have cell wall which animal cells do not.

B
Plant els do not have vacuole while animal cells do have.

C
Plant cells have only cell membrane while animal cells have both cell wall as
well as cell membrane.

D
Plant cells have more plastids while animal cells have few plastids.
Question 6
1 / -0

What do we get by the product of mass and velocity?

A
Force

B
Inertia

C
Momentum

D
Newton

Solution

The product of mass and velocity is momentum.
A good way to summarize momentum is to say momentum is mass in motion. All objects have mass, but not all objects are moving; therefore, not all objects have momentum. If an object is moving, though, it has momentum.
Question 7
1 / -0

The expression for the force is given by $$b+\dfrac{c}{t^{3}}$$, where $$'b'$$ and $$'c'$$ are some physical quantities and $$'t'$$ is the time. Then the dimensions of $$'c'$$ are

A
$$M^{0}LT$$

B
$$MLT^{-1}$$

C
$$MLT^{-2}$$

D
$$MLT$$
Question 8
1 / -0

Wave properties are only important for particles having

A
High mass and low velocity

B
Low mass and no velocity

C
High mass and high velocity

D
Low mass and high velocity
Question 9
1 / -0

Which of the following could not be a unit of acceleration?

A
$$km/s^2$$

B
$$cm s^{-2}$$

C
$$ km/s$$

D
$$ m/s^2$$

Solution

$$ km/s$$
Question 10
1 / -0

Which of he following statement is correct regarding velocity and speed of a moving body?

A
Velocity of a moving body is always higher than its speed

B
Speed of a moving body is always higher than its velocity

C
Speed of a moving body is its velocity in a given direction

D
Velocity of a moving body is its speed in a given
direction

Solution

Option d) Velocity of a moving body i its speed in a given direction.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Basic Science Test 25

Result

Basic Science Test 25

Score

-

Rank

-

SHARING IS CARING

Question 1

15000 kg km/hr

15000 kg m/s

54000 kg m/s

54000 g m/s

Solution

Question 2

hectare

bigha

guintha

none

Question 3

Velocity of a moving body is always higher than its speed.

Speed of a moving body is always higher than its velocity

Speed of a moving body is its velocity in a given direction

Velocity of a moving body is its speed in a given direction

Solution

Question 4

$$ms^1$$

$$kg/ms$$

$$kgms^{-1}$$

$$kgm's$$

Solution

Question 5

Plant cells have cell wall which animal cells do not.

Plant els do not have vacuole while animal cells do have.

Plant cells have only cell membrane while animal cells have both cell wall aswell as cell membrane.

Plant cells have more plastids while animal cells have few plastids.

Question 6

Force

Inertia

Momentum

Newton

Solution

Question 7

$$M^{0}LT$$

$$MLT^{-1}$$

$$MLT^{-2}$$

$$MLT$$

Question 8

High mass and low velocity

Low mass and no velocity

High mass and high velocity

Low mass and high velocity

Question 9

$$km/s^2$$

$$cm s^{-2}$$

$$ km/s$$

$$ m/s^2$$

Solution

Question 10

Velocity of a moving body is always higher than its speed

Speed of a moving body is always higher than its velocity

Speed of a moving body is its velocity in a given direction

Velocity of a moving body is its speed in a givendirection

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

Plant cells have only cell membrane while animal cells have both cell wall as
well as cell membrane.

Velocity of a moving body is its speed in a given
direction