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Published on: 05/12/2020
10th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Seven
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.
Copper displaces - metal from its solution.
Zn
AI
Ag
all the above
2.
The degree of hotness or coldness of a body is called _____
Energy
Thermal energy
Temperature
Heat capacity
3.
Temperature is a property which determines
amount of heat a body contains
total absolute energy a body has
direction of flow of heat
thermal energy
4.
__________ is fissionable by neutrons of all energies.
U235
U238
U239
Np239
5.
Nucleons are made of ________.
atoms
electrons and protons
electrons and neutrons
protons and neutrons
6.
7.
A magnifying glass is also called
Telescope
Compound microscope
Simple microscope
Astronomical telescope
8.
The human eye forms the image of an object at its
Cornea
Iris
Pupil
Retina
9.
Real images formed by convex lenses are always
an the same side of the object
inverted
erect
smaller than the object
10.
The scattering of light by colloidal particles is _____ scattering.
Ray light
Mie
Raman
Tyndall
11.
Before playing guitar, guitarist adjust the tension and pluck the string. By doing so, he is adjusting.
intensity of sound only
amplitude
frequency
loudness of sound
12.
The path of light is ______
rays
point
lines
beam
13.
The distance from the centre of the nucleus to the outer most electron in an ion is termed as _________ radii.
atomic
ionic
Covalent
both (b) and (c)
14.
15.
16.
Mass of an electron is
9.1083 x 10-31kg
9.1083 x 10-24kg
1.67262 x 10-27kg
1.67 x 10-24gm
17.
The formula used for Newton's II law of motion
Force = mass x acceleration
Velocity = acceleration x time
Momentum = mass x velocity
Speed = distance ÷ time
18.
What happens when ammeter connected in parallel?
Open circuited
Closed Circuited
Short circuited
None of the above
19.
When one of three series resistors is removed from a circuit and the circuit is reconnected the current
increase by half
increases
decreases by half
none of the above
20.
The resistance of a body to change its direction of motion is
force
momentum
inertia of motion
inertia of direction
21.
Global warming will cause
raise in level of oceans
melting of glaciers
sinking of islands
all of these
22.
The loss of one or more chromosome in a ploidy is called_____________.
Tetraploidy
Aneuploidy
Euploidy
Polyploidy
23.
To increase the sugar production in sugarcanes they are sprayed with _______
Auxin
Cytokinin
Gibberellins
Ethylene
24.
Which of the following is used to produce products useful to humans by biotechnology techniques?
enzyme from organism
live organism
vitamins
both (a) and (b)
25.
Male gametes in angiosperms are formed by the division of ___________
Generative cell
Vegetative cell
Microspore mother cell
Microspore
26.
In reflex action, the reflex arc is formed by
brain, spinal cord, muscle
receptor, muscle, spinal cord
muscle, receptor, brain
receptor, spinal cord, muscle
27.
Metastasis is associated with
Malignant tumour
Benign tumour
Both (a) and (b)
Crown gall tumour
28.
Mammals are ______________ animals.
Cold blooded
Warm blooded
Poikilothermic
All the above
29.
The chemical equation Na2SO4(aq) + BaCl2(aq) → BaSO4(s)↓ + 2NaCl(aq) represents which of the following types of reaction?
Neutralisation
Combustion
Precipitation
Single displacement
30.
The basis of modern periodic law is__________.
atomic number
atomic mass
isotopic mass
number of neutrons
31.
Kamini reactor is located at __________
Kalpakkam
Koodankulam
Mumbai
Rajasthan
32.
33.
Which of the following statements is wrong about detergents?
It is a sodium salt of long chain fatty acids
It is sodium salts of sulphonic acids
The ionic part in a detergent is –SO3–Na+
It is effective even in hard water.
34.
Which of the following lens would you prefer to use while reading small letters found in a dictionary?
A convex lens of focal length 5 cm
A concave lens of focal length 5 cm
A convex lens of focal length 10 cm
A concave lens of focal length 10 cm
35.
1.
(c)
Ag
2.
(c)
Temperature
3.
(c)
direction of flow of heat
4.
(a)
U235
5.
(d)
protons and neutrons
6.
(b)
7.
(c)
Simple microscope
8.
(d)
Retina
9.
(b)
inverted
10.
(d)
Tyndall
11.
(c)
frequency
12.
(a)
rays
13.
(b)
ionic
14.
(a)
15.
(b)
16.
(a)
9.1083 x 10-31kg
17.
(a)
Force = mass x acceleration
18.
(c)
Short circuited
19.
(b)
increases
20.
(d)
inertia of direction
21.
(d)
all of these
22.
(b)
Aneuploidy
23.
(c)
Gibberellins
24.
(d)
both (a) and (b)
25.
(a)
Generative cell
26.
(d)
receptor, spinal cord, muscle
27.
(a)
Malignant tumour
28.
(b)
Warm blooded
29.
(c)
Precipitation
30.
(a)
atomic number
31.
(a)
Kalpakkam
32.
(b)
33.
(a)
It is a sodium salt of long chain fatty acids
34.
(a)
A convex lens of focal length 5 cm
35.
(d)
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
