Question

Class 9th UT 2

New bal bharti public school noida

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The gravitational potential energy of an object is due to

0 points

its mass

its acceleration due to gravity

its height above the earth's surface

all above

If the velocity of a body is doubled its kinetic energy

1 point

gets double

gets half

does not change

become 4 times

One unit of electrical energy is equal to

1 point

3.6*10^6 J

3.6*100000J

36*1000J

none

Certain force acting on a 20kg mass changes it's velocity from 5m/s to 2m/s. Calculate the work done by the force.

2 points

Your answer

The ball is thrown up, the value of ‘g’ will be

1 point

0

-ve

+ve

none

The mass of the body on moon is 40kg, what is the weight on the earth.

1 point

392N

240N

180kg

none

The formula for quicklime is

1 point

CaO

CAO

Cao

cao

Mass of an object is 10kg. What is its weight on the earth? Take g=10m/s^2

2 points

90N

100N

98N

90KG

The distance between two bodies becomes 6 times more than the usual distance. The the F becomes

1 point

36

6

12

1/36

The connective tissue that connects muscle to bone is called

1 point

ligament

tendon

nervous tissue

all above

Xylem and phloem are examples of

1 point

epidermal tissue

protective tissue

simple tissue

complex tissue

The tissue that helps in the movement of our body are

1 point

musclar tissue

skeletal tissue

nervous tissue

all

Cartilage and bone are types of

1 point

connective tissue

epithelial tissue

meristematic tissue

muscular tissue

The electronic configuration of chlorine is

1 point

2,8,7

2,8,8

2,5,10

17

The electrons present in the outermost shell are called

1 point

valence e-

valency e-

valence shell

octate e-

The atomic number of sodium is 11 and its mass number is 23. It has

1 point

11 neutrons and 12 protons

12 protons and 11 electrons

11 electrons and 12 neutrons

12 electrons and 11 neutrons

The isotope used to remove the brain tumours and treatment of cancer is

1 point

Co-60

U 235

Iodine

Na 24

The valency of nitrogen in NH3 is

1 point

3 electrons

3

2

1

The symbol of cadmium is

1 point

Cd

CD

Ca

C

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Answer 1

Answer:

bhai pure paper bataduok I will try