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Published on: 12/06/2021
QB365 provides detailed and simple solution for every Book back Questions in class 10 Science Subject. It will helps to get more idea about question pattern in every book back questions with solution.
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
There are ________ pairs of cranial nerves and _______ pairs of spinal nerves.
12, 31
31, 12
12, 13
12, 21
2.
During transpiration there is loss of
Carbon dioxide
Oxygen
Water
None of the above
3.
The segments of leech are known as
Metameres (somites)
Proglottids
Strobila
All the above
4.
Photolysis is a decomposition reaction caused by __________
heat
electricity
light
mechanical energy
5.
Identify the non aqueous solution.
sodium chloride in water
glucose in water
copper sulphate in water
sulphur in carbon di sulphide
6.
Chemical formula of rust is ________.
FeO.xH2O
FeO4.xH2O
Fe2O3.xH2O
FeO
7.
The endarch condition is the characteristic feature of
root
stem
leaves
flower
8.
____________ isotope is used for the treatment of cancer.
Radio Iodine
Radio Cobalt
Radio Carbon
Radio Nickel
9.
Which of the following pairs can be the successive members of a homologous series?
C3H8 and C4H10
C2H2 and C2H4
CH4 and C3H6
C2H5OH and C4H8OH
10.
The velocity of sound in air at a particular temperature is 330 ms-1. What will be its value when temperature is doubled and the pressure is halved?
330 ms-1
165 ms-1
330 x \(\sqrt { 2 } \) ms-1
320/\(\sqrt { 2 } \) ms-1
11.
Which of the following statement is incorrect?
12 gram of C – 12 contains Avogadro’s number of atoms.
One mole of oxygen gas contains Avogadro’s number of molecules
One mole of hydrogen gas contains Avogadro’s number of atoms
One mole of electrons stands for 6.023 × 1023 electrons.
12.
In a simple circuit, why does the bulb glow when you close the switch?
The switch produces electricity
Closing the switch completes the circuit.
Closing the switch breaks the circuit.
The bulb is getting charged.
13.
If a substance is heated or cooled, the linear expansion occurs along the axis of
X or –X
Y or –Y
both (a) and (b)
(a) or (b)
14.
Magnification of a convex lens is
Positive
negative
either positive or negative
zero
15.
Newton’s III law is applicable
for a body is at rest
for a body in motion
both a & b
only for bodies with equal masses
1.
(a)
12, 31
2.
(c)
Water
3.
(a)
Metameres (somites)
4.
(c)
light
5.
(d)
sulphur in carbon di sulphide
6.
(c)
Fe2O3.xH2O
7.
(b)
stem
8.
(b)
Radio Cobalt
9.
(a)
C3H8 and C4H10
10.
(c)
330 x \(\sqrt { 2 } \) ms-1
11.
(c)
One mole of hydrogen gas contains Avogadro’s number of atoms
12.
(b)
Closing the switch completes the circuit.
13.
(d)
(a) or (b)
14.
(c)
either positive or negative
15.
(c)
both a & b
10th Standard Syllabus & Materials
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
