Basic Science

(Q.1) Decibel is the unit of:

A) speed of light
B) intensity of sound
C) intensity of heat
D) None of the above

View Answer
Answer: (b)

(Q.2) Fat can be separated from milk in a cream separator because of:

a) centrifugal force
b) cohesive force
c) gravitational force
d) centripetal force

View Answer
Answer: (a)

(Q.3) Newton’s first law is also called as:

law of movements
law of momentum
law of inertia
law of energy

View Answer
Answer: (c)

(Q.4) Which bacteria is helpful in making curd from milk?

Mycobacterium
StaphlioCoccus
Yeast
Lactobacillus

View Answer
Answer: (d)

(Q.5) Penicillin is isolated from:

Fungi
Algae
Virus
Bacteria

View Answer
Answer: (a)

(Q.6) Clove is a:

Fruit
Dry flower bud
Vegetative bud
Seed

View Answer
Answer: (b)

(Q.7) Pollen grains of flowers in which pollination takes place by insects are:

Smooth and dry
Rough and dry
Rough and sticky
Large in size

View Answer
Answer: (c)

(Q.8) The oxygen in photosynthesis is released from:

CO2
Chlorophyll
H2O
Both CO2 and H2O

View Answer
Answer: (c)

(Q.9) Which is the largest flightless bird?

Ostrich
Emu
Kiwi
Penguin

View Answer
Answer: (a)

(Q.10) A chemical substance secreted by particular species of animal to attract another member of same species is:

Adronome
Pheromones
Steroid
Nucleic Acid

View Answer
Answer: (b)

(Q.11) Which among the following controls blood pressure?

Thyroid
Parathyroid
Adrenal
Thymous

View Answer
Answer: (c)

(Q.12) Insulin was discovered by:

Fredrick Sanger
Donald Reagan
Alexander Flaming
Fredrick Banting

view Answer
Answer: (d)

(Q.13) Which phenomenon do bats and dolphins use to find prey?

Echo Location
Refraction of Sound
Formation of beats
Scattering of sound

View Answer
Answer: (a)

(Q.14) Bile is produced by:

Stomach
Liver
Pancreas
Duodenum

View Answer
Answer: (b)

(Q.15) Metal tea pots have wooden handles because

it prevents electric shock
of hygiene factorbecause wood is a bad conductor of heatit provide better grip

View Answer
Answer: (c)