Annual Examination - 2020
(5)
foetus
Its can be identified is called flee toplotne
Time 2:30HTS
SUBJECT - SCIENCE
Roll
CLASS-VIII
MM= 60
1. Fill in the blanks:
a) The stage of an embryo when all the body parts can be identified is called
b) Friction produce Heat
c) Time taken by an object to complete one oscillation is called_time Perton
d) The process of depositing a layer of any desired metal on another material by means of electricity is
called Clectroplating
e) Increase in the temperature due to increase in the carbon dioxide gas in the lead to
2. Answer the following in one word (5)
in which female reproductive organ does the embryo get embedded?
Name the male hormone responsible for secondary sexual character?
Name some objects around you that are electroplated.
iv. What is the audible range of frequencies for a normal human ear?
Name the natural satellite of the earth.
3. Mark the following true or false (5)
i Fertilisation is necessary even in asexual reproduction. ( )
Liquid exerts pressure on the walls of the container ( )
FL The passage of an electric current through a conducting liquid cause chemical reaction -
The passage of an electric current through a conducting liquid cause chemical reaction -
Sulphur dioxide and nitrogen dioxide gases are responsible for acid rain. T T
4. Choose the correct answer (5)
1 Which of the following is essential for the production of thyroxine that changes a Tadpole to a frag
a) sodium
b) iodine. c) nitrogen
2. Which of the following cannot be charged easily by friction
a) plastic scale
b) inflated balloon c) copper rod
3. The splitting of white light into its seven constituent colors is called
Answers
Answered by
2
Answer:
1)
a)Foetus
b)Heat & Energy
c) Time Period
d) Electroplating
e) Greenhouse Gas Effect
2)
a) uterus
b) Testosterone
c) Jewellery
d)20Hz to 20,000 Hz
3)
a) False
b) True
c) True
d) True
4)
a)Iodine
b)Inflated Balloon
c)Dispersion Of Light
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