Question 3 :
There are several small scattered coloured bodies in the cytoplasm of the cells. What are those?
Question 6 :
Which of these are the differences between plant and animal cell?
Question 8 :
A white blood cell (WBC) in human blood is another example of _____________which can change its shape
Question 11 :
Out of the following, which is the correct match for Endocrine gland attached to brain
Question 12 :
The most conspicuous visible change that occurs in boys during puberty is:
Question 14 :
State true or false. The period of life, when the body undergoes changes, leading to reproductive maturity is known as adolescence.
Question 16 :
Name the hormone which would be released during the following situations:development of tadpole to frog.
Question 17 :
State the following statement True or False:-
Reproductive life of a woman lasts from menarche to menopause.
Question 18 :
Out of the following, which is the correct match for Pancreatic hormone
Question 19 :
All parts of the body grow at the same rate. TRUE or FALSE?
Question 20 :
Insufficient production of __________ in the tadpoles leads to their incomplete development.
Question 22 :
If you place a book over 3 cylindrical pencils and push it, is it easier to move the book this way?
Question 23 :
What is easier to move the box from rest, or to move it when it is already in motion?
Question 24 :
Friction opposes relative motion between the surfaces of the book and the table. True or false?
Question 25 :
The handle of a cricket bat or a badminton racquet is usually rough. Which of the following is the reason for it?
Question 26 :
A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same ball travel longer distance before coming to rest, he may
Question 27 :
Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor . Who will have to apply a larger force?
Question 28 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d072f59b460d7261f2f2.PNG' />
In the above image, two boys are shown applying force on a box. If the magnitude of the force applied by each is equal, will the box experience any force of friction?
Question 29 :
If an object started moving, it would never stop if there were no friction.
Question 30 :
It is obvious that the force of friction will ______ if the two surfaces are pressed harder.
Question 31 :
State true or false: The force of gravitation exist between two astronauts in space
Question 32 :
A ball of dough is rolled into a flat chapati. What is the name of the force exerted to change the shape of the dough?.
Question 33 :
State true or false: Force of gravity act on dust particles
Question 34 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d06df59b460d7261f2eb.PNG' />
In the above image, a man with a parachute is shown. Will he come down with the same speed without the parachute?
Question 35 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d06bf59b460d7261f2e9.PNG' />
In the above image, a man with a parachute is shown. Name the force which is responsible for his downward motion?
Question 36 :
While sieving grains, small pieces fall down. Which force pulls them down?
Question 37 :
Two objects repel each other. This repulsion could be due to
Question 39 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d06ff59b460d7261f2ed.PNG' />
In the above image, a circuit is shown when the key is closed, the compass needle placed in the match box deflects. Name the force which causes this deflection.
Question 40 :
During dry weather, clothes made of synthetic fibre often stick to the skin. Which type of force is responsible for this phenomenon?