Question

Biology

1) Why the plasma membrane is called a selectively permeable membrane?.
2) Which organelle is known as powerhouse of cell and why?.
3) What is acute and chronic disease, explain with one example.
4) Explain in detail means of spread.
5) Difference between animal cell and plan cell.
6) Comment in details on organ specific and tissue specific manifestation.
7) What is mean by Principle of prevention, explain in detail.
8) Draw well labelled diagram of Animal cell and Plant cell.

Physics

1) Define uniform circular motion. Give two examples.
2) What is odometer and speedometer?
3) Define velocity and acceleration. State their S. I. and C.G.S. unit.
4) State any two points of difference between distance and displacement.
5) A motor car moving along a straight line with uniform velocity of 90 km/h, its velocity slowed down to 18 km/h in 4 s. Calculate its acceleration.
6) An athlete c omplete one round of a circular track of radius 350 m in 1 minute. What will be the distance covered and displacement at the end of 600s.
7) State the equation of motion with meaning of each symbol.

Chemistry

1) Explain the Properties of suspension
2) How will you justify that clean air is a mixture and not a compound ?
3) State the application of colloid
4) Distinguish between Homogeneous and Heterogeneous mixture
5) Write the characteristic of metals .
6) Differentiate between Physical and chemical changes.
7) Distinguish between saturated and unsaturated solutions. ​

Answer 1

Explanation:

1. As it allows the movement of some particular or specific substances only

2. Mitochondria as it produces ATP

3.Acute diseases remain for a short period of time ex:- cough and cold. Chronic diseases remain for a long period of time ex:-Asthama