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Published on: 05/12/2020
10th Standard Science English Medium Free Online Test Book Back 1 Mark Questions with Answer Key Part - 3
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.
Green house effect refers to
cooling of earth
trapping of UV rays
cultivation of plants
warming of earth
2.
The _____________ units form the backbone of the DNA.
5 Carbon sugar
Phosphate
Nitrogenous bases
Sugar phosphate
3.
Avena coleoptile test was conducted by
Darwin
N. Smit
Paal
F.W. Went
4.
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)
5.
The outer most of the three cranial meninges is
arachnoid membrane
piamater
duramater
myelin sheath
6.
7.
The wall of human heart is made of
Endocardium
Epicardium
Myocardium
All of the above
8.
The body of leech has
23 segments
33 segments
38 segments
30 segments
9.
A single displacement reaction is represented by X(s) + 2HCl(aq) → XCl2(aq) + H2(g). Which of the following(s) could be X. (i) Zn (ii) Ag (iii) Cu (iv) Mg. Choose the best pair.
i and ii
ii and iii
iii and iv
i and iv
10.
The number of components in a binary solution is _____________
2
3
4
5
11.
_____ group contains the member of halogen family.
17th
15th
18th
16th
12.
Kreb’s cycle takes place in
chloroplast
mitochondrial matrix
stomata
inner mitochondrial membrane
13.
____________ isotope is used for the treatment of cancer.
Radio Iodine
Radio Cobalt
Radio Carbon
Radio Nickel
14.
C2H5OH + 3O2 → 2CO2 + 3H2O is a
Reduction of ethanol
Combustion of ethanol
Oxidation of ethanoic acid
Oxidation of ethanal
15.
If a sound wave travels with a frequency of 1.25 x 104 Hz at 344 ms-1, the wavelength will be
27.52 m
275.2 m
0.02752 m
2.752 m
16.
Mass of 1 mole of Nitrogen atom is
28 amu
14 amu
28 g
14 g
17.
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.
18.
Temperature is the average ______ of the molecules of a substance
difference in K.E and P.E
sum of P.E and K.E
difference in T.E and P.E
difference in K.E and T.E
19.
In a myopic eye, the image of the object is formed
behind the retina
on the retina
in front of the retina
on the blind spot
20.
In which of the following sport the turning of effect of force used
swimming
tennis
cycling
hockey
1.
(d)
warming of earth
2.
(d)
Sugar phosphate
3.
(d)
F.W. Went
4.
(d)
both (a) and (b)
5.
(c)
duramater
6.
(d)
7.
(d)
All of the above
8.
(b)
33 segments
9.
(d)
i and iv
10.
(a)
2
11.
(a)
17th
12.
(b)
mitochondrial matrix
13.
(b)
Radio Cobalt
14.
(b)
Combustion of ethanol
15.
(c)
0.02752 m
16.
(d)
14 g
17.
(b)
Closing the switch completes the circuit.
18.
(c)
difference in T.E and P.E
19.
(c)
in front of the retina
20.
(c)
cycling
10th Standard Syllabus & Materials
10th Standard
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
