Question

Section
2
3
5
4
3
2.
1
kratika
Mareskole
sut Maths copy
*owLilyen
What is momentum? Give its unit?
What are Lichens?
Answer Q-no, 3(a) – 3 (d) on the basis of your understanding of the following paragraph and the related
concepts-
Calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide. When 10 gram of CaCO3
is decomposed completely then 5.6 gram of Cao is formed.
3(a) Write the balanced chemical equation?
3(b) Calculate the mass of carbon dioxide formed?
3(c) Which law of chemical combination is used in solving the problem?
3(d) State the law?
4. For Q-no 4(a) - 4(d) are based on the table given below. Study the table related to energy and answers the
questions
An object of mass 10 kg is dropped from a height of 5 m.
Height at which the object is KE (J) PE(J)
Total Energy KE+PE
placed (m)
0
500
500
100
400
500
200
300
500
300
200
500
400
100
500
Just above the ground
500
500
0
4(a) what can you conclude regarding the laws of physics from the table?
4(b) When the object is at a height of 5 m, its KE will be - (1) 500 J (3) OJ (iii) 400 J (iv) 300 J.
4) An object is falling freely from a height P. After it has fallen to a height of P/2, it will possess- (1)
Only PE (ii) only KE ) half KE and half PE (iv) less PE and more KE
46d) diftin ke?
5. Kitchen of the cell is
(a) mitochondria(b) endoplasmic reticulum () chloroplast (d) golgi apparatus
The muscular tissue which function throughout the life continuously without fatigue is
(a) skeletal muscle cardiac muscle(c) smooth muscle
(d) voluntary muscle
7. Well defined nucleus is absent in
(a) Blue green algae (b) Diatoms
(C) Algae
(d) Yeast
8. Which one is not a source of carbohydrate?
(a) Rice (b) Millets (c) Sorghum (d) Gram
9.
Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms.
It implies that the boy is
(a) at rest
(b) moving with no acceleration
() in accelerated motion
(d) moving with uniform velocity
10. Rocket works on the principle of conservation of
(a) mass
(c) momentum(d) velocity
The value of quantity G in the law of gravitation
(a) depends on the mass of earth only
() depends on the radius of the earth only
(c) depends on both mass and radius of the earth
(d) is independent of mass and radius of the earth
The chemical symbol for nitrogen gas is:
fa) N
(b) N2
(c)N
(d){N
(b) energy
12.​

Answer 1

Answer:

use doubtnut apk avilbale on play store for math , physics, chemistry doubts