10th Standard Syllabus & Materials
10th Standard
TN 10th Tamil நாகரிகம், நாடு, சமூகம் - கவிதை பேழை (செய்யுள்) -முத்தொள்ளாயிரம் Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil அறம்,தத்துவம், சிந்தனைகவிதை பேழை (செய்யுள்) -அக்கறை Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil உயிரின்ஓசை - துணைப்பாடம் -பிருமம் Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil அறம், தத்துவம், சிந்தனை - கவிதை பேழை (செய்யுள்) -தேம்பாவணி * Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil கலை, அழகியல், புதுமை - உரைநடை உலகம் -பன்முகக் கலைஞர் Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil மணற்கேணி - இலக்கணம் - இலக்கணம் -பொது Sample Question Papers Study Material - QB365 Set A

Published on: 05/12/2020
10th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 9
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.
The sodium salt of long chain fatty acid which helps in cleaning of clothes is ________________
vinegar
detergent
soap
both (b) and (c)
2.
_____ helps in the breakdown of glycogen to glucose in the liver.
Ephinephrine
Norepinephrine
Glucagon
Insulin
3.
_____ is called Stress hormone.
Auxin
Gibberellin
Cytokinin
ABA
4.
_________ or sediments fill the hollow depression and forms a cast.
Rocks
Sand
Soil
Minerals
5.
Which of the following reactions is not feasible?
Zn + CuSO4 ⟶ ZnSO4 + Cu
2Ag + Cu (NO3)2 ⟶ AgNO3 + Cu
Fe + CuSO4 ⟶ FeSO4 + Cu
Mg + 2HCI ⟶ MgCl2+ H2
6.
Linear expansion is the change in _____ when object is heated or cooled.
length
area
volume
density
7.
__________ is fissionable by neutrons of all energies.
U235
U238
U239
Np239
8.
A chain reaction is continuous due to
large mass defect
large energy
production of more neutrons in fission
None of these
9.
An example for a solution containing liquid solute in gas solvent is ____________
soda water
cloud
cork
smoke
10.
40 g of sodium chloride in 100 g of water at 250 C forms ________ solution.
Super saturated
Unsaturated
Saturated
Both (a) and (b)
11.
To increase the magnification of the telescope, the focal length of the ______
Objective lens is small and eye lens is large
Objective lens is large and eye lens is small
Objective lens and eye lens are small
Objective lens and eye lens are large
12.
The defect of myopia can be corrected by using
Concave
Convex
Combination of lenses
None
13.
Highly enlarged image is obtained by convex lens when object is at
infinity
F
below F & C
beyond 2F
14.
Infrasound can be heard or produced by
dog
bat
rhinoceros
human beings
15.
When light travels from rarer to denser medium, the refracted ray is ______ the normal.
bent away
along
bent towards
just grazes the surface of separation
16.
________is a disc shaped structure.
Uterus
Placenta
Ovary
Sperm
17.
Volume of a gas at STP is 1.12 x 10-7 cc Calculate the number of molecules in it:
3.01 x 1020
3.01 x 1015
3.01 x 1023
3.01 x 1024
18.
A heating element used in the electric iron box and the electric heater is
Tungsten
Nichrome
Lead
All the above
19.
20.
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
21.
The acceleration in a body is due to
balanced force
unbalanced force
equilibrant
couple
22.
The resistance of material depends on.
Temperature
Length of conductor
Area of cross-section
All the above
23.
24.
The region of the chromosome where the spindle fibres get attached during cell division
Chromomere
Centrosome
Centromere
Chromonema
25.
There are ________ pairs of cranial nerves and _______ pairs of spinal nerves.
12, 31
31, 12
12, 13
12, 21
26.
Metastasis is associated with
Malignant tumour
Benign tumour
Both (a) and (b)
Crown gall tumour
27.
Which of the following represents a precipitation reaction?
A(s) + B(s) → C(s) + D(s)
A(s) + B(aq) → C(aq) + D(l)
A(aq) + B(aq) → C(s) + D(aq)
A(aq) + B(s) → C(aq) + D(l)
28.
The number of components in a binary solution is _____________
2
3
4
5
29.
____________ isotope is used for the treatment of cancer.
Radio Iodine
Radio Cobalt
Radio Carbon
Radio Nickel
30.
Which of the following are used as an aesthetics?
Carboxylic acids
Ethers
Esters
Aldehydes
31.
When a sound wave travels through air, the air particles
vibrate along the direction of the wave motion
vibrate but not in any fixed direction
vibrate perpendicular to the direction of the wave motion
do not vibrate
32.
In the nucleus of 20Ca40, there are
20 protons and 40 neutrons
20 protons and 20 neutrons
20 protons and 40 electrons
40 protons and 20 electrons
33.
If a substance is heated or cooled, the change in mass of that substance is
positive
negative
zero
none of the above
34.
Power of a lens is –4D, then its focal length is
4m
–40m
–0.25 m
–2.5 m
35.
Plotting a graph for momentum on the Y-axis and time on X-axis. slope of momentum- time graph gives
Impulsive force
Acceleration
Force
Rate of force
1.
(c)
soap
2.
(c)
Glucagon
3.
(d)
ABA
4.
(d)
Minerals
5.
(b)
2Ag + Cu (NO3)2 ⟶ AgNO3 + Cu
6.
(a)
length
7.
(a)
U235
8.
(c)
production of more neutrons in fission
9.
(b)
cloud
10.
(a)
Super saturated
11.
(b)
Objective lens is large and eye lens is small
12.
(a)
Concave
13.
(b)
F
14.
(c)
rhinoceros
15.
(c)
bent towards
16.
(b)
Placenta
17.
(b)
3.01 x 1015
18.
(b)
Nichrome
19.
(b)
20.
(a)
9.1083 x 10-31kg
21.
(b)
unbalanced force
22.
(d)
All the above
23.
(a)
24.
(c)
Centromere
25.
(a)
12, 31
26.
(a)
Malignant tumour
27.
(c)
A(aq) + B(aq) → C(s) + D(aq)
28.
(a)
2
29.
(b)
Radio Cobalt
30.
(b)
Ethers
31.
(a)
vibrate along the direction of the wave motion
32.
(b)
20 protons and 20 neutrons
33.
(c)
zero
34.
(c)
–0.25 m
35.
(c)
Force
10th Standard Syllabus & Materials
10th Standard
TN 10th Tamil கூட்டாஞ்சோறு - இலக்கணம் - தொகைநிலை தொடர்கள் Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil பண்பாடு - கவிதை பேழை (செய்யுள்) -முத்துக்குமாரசாமி பிள்ளைத்தமிழ் Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil உயிரின்ஓசை - இலக்கணம் - தொகாநிலை தொடர் Sample Question Papers Study Material - QB365 Set A
NEW10th Standard
TN 10th Tamil இயற்கை, சுற்றுசூழல், அறிவியல் - கவிதை பேழை (செய்யுள்) -மேகம் Sample Question Papers Study Material - QB365 Set A
Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards