1. What happens to the kinetic energy of gas molecules with rise of temperatue?
a. Remains same
b. Fluctuates
c. Increases
d. Decreases
2. An antigen is
a. the result of antibody
b. the resideu of an antibody
c. the opposite of antibody
d. the stimulus for antibody formation
3. The materials which are strongly attracted by magnet are called
a. ferromagnetic substances
b. universal substances
c. paramagnetic substances
d. daia-magnetic substances
4. The best way to maintain a natural equilibrium betwwn the pest and predator is by using
a. insecticides
b. biological control
c. pesticides
d. herbicides
5. A moleule in plants comparable to haemoglobin in animals is_____
a. Cytochrome
b. Cellulose
c. Chlorophy II
d. Carotene
6. The vaccination for ' small pox was invented by
a. Edwar Jenner
b. Louis Pastuer
c. Alexander Fleming
d. Darwin
7. The element used for vulcanizing rubber is
a. Sulphur
b. Bromine
c. Silicon
d. Phosphorus
8. Mirage is an example of _______
a. refracton of light only
b. total intrnal reclection of light
c. dispersion of light only
d. refraction and total internal reflection of light
9. Which of the following cell organelles is semi-permeable?
a. Cell membrane
b. Plasma membrane
c. Cell wall
d. Nucleus
10. Which of the following processes of weathering belongs to both mechanical and chemical weathering?
a. Crystallization
b. Exfoliaton
c. Hydration
d. Carbonation
11. Ultrasonic waves are those sound waves having frequency
a. between 20 hertz and 1000 hertz
b. between 1000 hertz and 20000 hertz
c. more than 20 kilo hertz
d. less than 20 hertz
12. The major component used in preaparation of different types of glasses is
a. Silica
b. Sodium Borate
c. Calcium Silicate
d. Sodium Silicate
13. Kilowatt-hour is the unit of
a. potential difference
b. electric power
c. electric energy
d. electrci potential
14. The metal constituent of cholorophy II is
a. iron
b. Pottassium
c. Manganese
d. Magnesium
15. Which of the following is used to make periscope?
a. Concave lens
b. Convex mirror
c. Convex lens
d. Plane mirror
16. Which of the following organs breaks fat to produce cholesterol?
a. Intestine
b. Liver
c. Lungs
d. Kidney
17. The mixture of acetone and alcohol can be separated by
a. filtration
b. separating funnel
c. fractional crystallization
d. fractional distillation
18. Sandalwood tree is considered as a
a. total root parasite
b. total stem parasite
c. partial root parasite
d. None of the above
19. Which of the following helps in determning the temperature of the sun?
a. Kirchhoff's law
b. Maxwell Boltzmann law
c. Planck's law
d. Stefan's law
20. Which of the following is not a part of solar system?
a. Meteors
b. Comets
c. Quasars
d. Asteriods
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