Question

Question No. 30 to 33 consist of two statements- Assertion (A) and Reason (R). Answer these
questions selecting the appropriate option given below:
a) Both (A) and (R) are true and (R) is the correct explanation of (A).
b) Both (A) and (R) are true but (R) is not the correct explanation of (A).
c) (A) is true but (R) is false.
d) (A) is false but (R) is true.
30) Assertion (A): Usually insect sting causes severe irritation and pain.

A B

Reason (R): Insect sting contains ethanoic acid that causes irritation.
1) Assertion (A): Translocation of food by root pressure occurs in xylem.
Reason (R): Water diffuses from xylem into phloem helping in translocation of material like sucrose.
2) Assertion (A): Exposure of hydrogen and chlorine mixture to sunlight produces hydrogen chloride.
Reason (R): It is an example of photolytic decomposition.
3) Assertion (A): Violet colour scatters the most while red colour scatters the least.
Reason (R): Angle of deviation is inversely proportional to the wavelength of the colour.

Answer 1

Answer:

30) (a) Both (A) and (R) are true and (R) is the correct explanation of (A).

31) (d) (A) is false but (R) is true.

32) (c) (A) is true but (R) is false.

33) a) Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation:

31) Phloem is responsible for transportation of food.

32) Formation of hydrogen chloride is a combination reaction.