Basic Science Test 25

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Basic Science Test 25

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Weekly Quiz Competition

Question 1
1 / -0

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

A
hectare

B
bigha

C
guintha

D
none
Question 2
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 3
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 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

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 6
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 7
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 8
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 9
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.
Question 10
1 / -0

An emergency vehicle travels $$10$$ miles at a speed of $$50$$ miles per hour. How fast must the vehicle travel on the return trip if the round-trip travel time is to be $$20$$ minutes?

A
$$72$$ miles per hour

B
$$75$$ miles per hour

C
$$65$$ miles per hour

D
$$78$$ miles per hour

Solution

Speed = Distance ÷ Time
Distance given = 10 miles
Speed given = 50 miles per hour
Time = x
Find out time
50=10÷x
50x=10
x=1÷5 hours
x=12 minutes
Total trip = 20 minutes
remaining time = 8 minutes
Now,
Time = 8 min (8÷60) hours = (2÷15) hours
Speed = x
Distance = 10 miles (as we will just have to ride back)
Speed = Distance ÷ Time
x=(10)÷(2÷15)
x=(10)×(15÷2)
x=150÷2
x=75
The speed will have to be 75 miles per hour

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Re-Attempt Weekly Quiz Competition

Basic Science Test 25

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Basic Science Test 25

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SHARING IS CARING

Question 1

hectare

bigha

guintha

none

Question 2

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 3

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 4

$$ms^1$$

$$kg/ms$$

$$kgms^{-1}$$

$$kgm's$$

Solution

Question 5

Force

Inertia

Momentum

Newton

Solution

Question 6

$$M^{0}LT$$

$$MLT^{-1}$$

$$MLT^{-2}$$

$$MLT$$

Question 7

High mass and low velocity

Low mass and no velocity

High mass and high velocity

Low mass and high velocity

Question 8

$$km/s^2$$

$$cm s^{-2}$$

$$ km/s$$

$$ m/s^2$$

Solution

Question 9

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

Question 10

$$72$$ miles per hour

$$75$$ miles per hour

$$65$$ miles per hour

$$78$$ miles per hour

Solution

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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