VIII Standard - 8th - Science - Second Midterm Test Question Paper - Samacheer Kalvi
SECOND MID TERM TEST
Class : VIII Time : 1.30 Hours
Subject : SCIENCE Marks : 50
SCIENCE -I
I. Choose the correct answer 5x1=5
1. Which of the following a simple circuit must have?
a) Energy source, Battery,
Load b) Energy source,
Wire, Load
c) Energy source, Wire, Switch d) Battery, Wire, Switch
2. Fuse is__________
a) a switch b) a wire
with low resistance
c) a wire with high resistance d) a protective device for breaking an
electric circuit
3. When an ebonite rod is rubbed
with fur, the charge acquired by the fur is
a) negative b) positive c)
partly positive and partly negative d)
None of these
4. In water, hydrogen and oxygen
are combined in the ratio of _______by mass.
a) 1:8 b) 8:1 c)
2:3 d) 1:3
5. Cathode rays are made up of
a) neutral particles b)
positively charged particles
c) negatively charged particles d) None of the
above
II. Answer the
following questions (Any 5)
5x2=10
6. What is electric circuit?
7. Give some uses of electroplating
8. How charges are produced by
friction?
9. Write the names of the following
compounds.
a) CO b) N2O c) NO2 d) PCl5
10. Define the term ions or
radicals.
11. State the law of conservation
of mass.
III. Answer any TWO in detail 2x5=10
12. i)Write the skeleton equation for the following word equation and
then balance them.
a) Carbon + Oxygen → Carbon
dioxide
b) Phosphorus + Chlorine →
Phosphorus pentachloride.
c) Sulphur + Oxygen → Sulphur
dioxide
ii) Find the valency of the
element which is underlined in the following formula.
a) NaCl b) CO2
c) Al (PO4) d) Ba (NO3)2
13. Explain series and parallel
circuit.
14. i) Explain two ways of charge transfer. ( 3 MARKS)
ii) Write the chemical
formula for the following compounds ( 2 MARKS)
a) Aluminium sulphate b)
Silver nitrate c) Magnesium oxide d)
Barium chloride
SCIENCE –II
I. Choose the correct answer 5x1=5
1. Which one of the following
organisms lack muscles and skeleton for movement?
(a) Dog (b) Snail (c) Earthworm (d)
Human being
2. __________ joints are immovable.
(a) Shoulder and arm (b) Knee and
joint (c) Upper jaw and skull (d) Lower jaw and upper jaw
3. External ear (pinna ) is
supported by
(a) bone (b) cartilage (c)
tendon (d) capsule
4. Which one of the following
categories of vertebrae are correctly numbered?
(a) Cervical-7 (b) Thoracic-10 (c)
Lumbar - 4 (d) Sacral – 4
5. Cockroach moves with the help of
its
(a) leg (b) bone (c) muscular foot
(d) whole body
II. Answer the
following questions (Any 5)
5x2=10
6. What is skeleton?
7. What is cranium?
8. What is ligament?
9. Differentiate tendons and
ligament.
10. Differentiate between Movement
and Locomotion.
11. What are antagonistic muscles?
Give one example.
III. Answer any TWO
in detail 2x5=10
12. What are the functions of skeleton
in human body?
13. Discuss various types of
movements seen in living organisms.
14. Write a short note on different
types of muscles
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