Assertion: A solution is a homogenous mixture of two or more substances.
Reason :a solution scatters a beam of light passing through it.
SECTION B
2 MARKS QUESTION
18. List any two properties of colloid
19. why is crystallization technique considered better than simple evaporation to purify the
solids
20. Name the technique to separate
a) butter from curd b)camphor from Salt
21. what is the role of epidermis in plants
Section-C
3 MARKS QUESTION
22. list two differences between distance and displacement.
23. A solution of Urea in water contains 16 gram of it in 120 gram of solution find out the mass
percentage of the solution.
24. A) why is plasma membrane called selectively permeable membrane?
B) which organelle is known as powerhouse of the cell.why.
25. Give the names of the elements present in the following compounds
a) quicklime b) hydrogen Bromide c) baking powder d)Potassium Sulphate
SECTION- D
5 MARKS QUESTION
26. Derive the mathematical relation of Newton's second law of motion
or
Derive the mathematical formula of conservation of momentum.
27. From a rifle of mass 4 kg A bullet of mass 50 gram is fired with an initial velocity of 35 metre
per second calculate the initial recoil velocity of the rifle .
Or
Draw well labelled dia of neuron.
Answers
Answer:
Assertion: A solution is a homogenous mixture of two or more substances.
Reason :a solution scatters a beam of light passing through it.
SECTION B
2 MARKS QUESTION
18. List any two properties of colloid
19. why is crystallization technique considered better than simple evaporation to purify the
solids
20. Name the technique to separate
a) butter from curd b)camphor from Salt
21. what is the role of epidermis in plants
Section-C
3 MARKS QUESTION
22. list two differences between distance and displacement.
23. A solution of Urea in water contains 16 gram of it in 120 gram of solution find out the mass
percentage of the solution.
24. A) why is plasma membrane called selectively permeable membrane?
B) which organelle is known as powerhouse of the cell.why.
25. Give the names of the elements present in the following compounds
a) quicklime b) hydrogen Bromide c) baking powder d)Potassium Sulphate
SECTION- D
5 MARKS QUESTION
26. Derive the mathematical relation of Newton's second law of motion
or
Derive the mathematical formula of conservation of momentum.
27. From a rifle of mass 4 kg A bullet of mass 50 gram is fired with an initial velocity of 35 metre
per second calculate the initial recoil velocity of the rifle .
Or
Draw well labelled dia of neuron.
Answer:
ask only one question plese