Question

Please Answer :-

1. In the Eisenstein equation E=mc², c denotes to
a. velocity of sound
b. velocity of light.
c. wavelength of light
d. a constant factor.

2. Bamboo is an example of
a. herb
b. shrub
c. tree
d. giant tropical grass

3. Which of the following is a method to prevent soil erosion?
a. plant more tree
b. making dams
c. cutting trees
d. none of these

4. Besides nitrogen and phosphorus, the element commonly present in artificial fertilizer is:
a. barium
b. calcium
c. pottasium
d. sodium


5. Acid rain is caused due to pollution of environment by:
a. ozone and carbon dioxide
b. carbon dioxide and nitrogen
c. carbon monoxide and carbon dioxide
d. nitrous oxide and sulphur dioxide

Answer 1

Hey ! !!

1) ----c ( theory of relativity ). given by Albert Einstein. where ,the m stand for mass and
c stand for square of velocity of light .

2-----(d ). trick = > सबसे बड़ा घास => बांस!!!

it's is longest grass , that is bamboo ( found in tropical region means b/w tropical of cancer and tropic of Capricorn )

3 ------(a ) it is also known as afforestation .

planting of more and more trees . so the plant plant can bind the soil so , to prevent from soil erosion .

4----- ( c ) as They help in proper growth of plant ( note :- nitrogen help in proper growth of plant ) .

5------- (d ) .

as the nitogen and sulpheric acid are produce .

reaction =>>

sulpher + water = sulpheric acid

same in nitrogen ( no need to write )

hope it helps :D



thanks

Answer 2

Answer.
1. Option b) velocity of light.

2. Option d) Giant tropical grass.

3. Option a) Planting more trees.

4. Option c) Potassium.

5. Option d) Nitrous oxide and Sulphur dioxide.