Question

Singh salons
Q.1
Multiple Choice question
:
(10)
Which type of image is obtained in plane mirror?
a. inverted
b. virtual
C. Real
d. Magnified
2.
Which of the following is not responsible for water shortage?
a. Rapid growth of industries
b. increasing population
c. Heavy rainfall
d. Mismanagement of water resource
3
Which of following is an animal product?
a. Crum
b. Rubber
c.Herb
d. Honey
Microorganisms act upon the dead plant to produce.
a. sand
b. mushrooms
d.wood
c.humus
5.
Which of the following disease does not spread by contaminated water with microbes?
a Cholera
b.Typhoid
C.Jaundice
d.Tuberculosis
6.
Which type of image is formed by convex lens?
a. Real and magnified
b. Real and smaller
d. All of these
c. Virtual and magnified
7.
Which of the following is not the unit of speed?
a. Km/h
b. M/S
c. km/s
d. M/S2
8
Which of the following is not a part of pistil?
a. Ovary
b. style
C. Anther
d. Stigma
9.
Which type of a sexual reproduction occur in fern?
a. Budding
b. Spore formation
c. Fragmentation d. None of the given
b. Chlorine gas is passed in clarified
10. What is to be done with Aerator?
a. Air is well mixed with clarified water
water
c. Large object are removed
d. Allow to grow anaerobia bacteria
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Answer 1

1. b
2. a
3. d
4. c
5. a
6. d
7. d
8. b
9. b
10. a

Explanation:

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Answer 2

Answer:

Ferns use both sexual and asexual reproduction methods. In sexual reproduction, a haploid spore grows into a haploid gametophyte. If there is enough moisture, the gametophyte is fertilized and grows into a diploid sporophyte. The sporophyte produces spores, completing the life cycle.