10th Standard Syllabus & Materials
10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Population, Transport, Communication and Trade Important Questions And Answers Study Material - QB365 Set C
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Population, Transport, Communication and Trade Important Questions And Answers Study Material - QB365 Set B
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Population, Transport, Communication and Trade Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Resources and Industries Important Questions And Answers Study Material - QB365 Set C
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Resources and Industries Important Questions And Answers Study Material - QB365 Set B
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Resources and Industries Important Questions And Answers Study Material - QB365 Set A
Published on: 05/12/2020
10th Standard Science English Medium Free Online Test Book Back 1 Mark Questions Part - One
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 number of chromosomes found in human beings are __________________.
22 pairs of autosomes and 1 pair of allosomes.
22 autosomes and 1 allosome
46 autosomes
46 pairs autosomes and 1 pair of allosomes.
2.
LH is secreted by
Adrenal gland
Thyroid gland
Anterior pituitary
Hypothalamus.
3.
We can cut the DNA with the help of
scissors
restriction endonucleases
knife
RNAase
4.
What is true of gametes?
They are diploid
They give rise to gonads
They produce hormones
They are formed from gonads
5.
Node of Ranvier is found in
muscles
axons
dendrites
cyton
6.
A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?
O group
AB group
A and B group
All blood group
7.
The body of leech has
23 segments
33 segments
38 segments
30 segments
8.
The chemical equation Na2SO4(aq) + BaCl2(aq) → BaSO4(s)↓ + 2NaCl(aq) represents which of the following types of reaction?
Neutralisation
Combustion
Precipitation
Single displacement
9.
Identify the non aqueous solution.
sodium chloride in water
glucose in water
copper sulphate in water
sulphur in carbon di sulphide
10.
In the aluminothermic process the role of Al is _____.
oxidizing agent
reducing agent
hydrogenating agent
sulphurising agent
11.
Which is formed during anaerobic respiration
Carbohydrate
Ethyl alcohol
Acetyl CoA
Pyruvate
12.
In the nuclear reaction 6X12 \(\overset { \alpha \ decay }{ \longrightarrow } \) zYA, the value of A & Z.
8, 6
8, 4
4, 8
cannot be determined with the given data
13.
Gamma radiations are dangerous because
it affects eyes & bones
it affects tissues
it produces genetic disorder
it produces enormous amount of heat
14.
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
15.
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
16.
Which of the following represents 1 amu?
Mass of a C – 12 atom
Mass of a hydrogen atom
1/12th of the mass of a C – 12 atom
Mass of O – 16 atom
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.
In the Given diagram, the possible direction of heat energy transformation is
A\(\leftarrow\)B, A\(\leftarrow\)C, B\(\leftarrow\)C
A\(\rightarrow\)B, A\(\rightarrow\)C, B\(\rightarrow\)C
A\(\rightarrow\)B, A\(\leftarrow\)C, B\(\rightarrow\)C
A\(\leftarrow\)B, A\(\rightarrow\)C, B\(\leftarrow\)C
19.
A convex lens forms a real, diminished point sized image at focus. Then the position of the object is at
focus
infinity
at 2f
between f and 2f
20.
The unit of ‘g’ is m s-2. It can be also expressed as ______.
cms-1
Nkg-1
Nm2kg-1
cm2s-2
1.
(a)
22 pairs of autosomes and 1 pair of allosomes.
2.
(c)
Anterior pituitary
3.
(b)
restriction endonucleases
4.
(d)
They are formed from gonads
5.
(b)
axons
6.
(a)
O group
7.
(b)
33 segments
8.
(c)
Precipitation
9.
(d)
sulphur in carbon di sulphide
10.
(b)
reducing agent
11.
(b)
Ethyl alcohol
12.
(b)
8, 4
13.
(c)
it produces genetic disorder
14.
(a)
C3H8 and C4H10
15.
(c)
330 x \(\sqrt { 2 } \) ms-1
16.
(c)
1/12th of the mass of a C – 12 atom
17.
(b)
Closing the switch completes the circuit.
18.
(a)
A\(\leftarrow\)B, A\(\leftarrow\)C, B\(\leftarrow\)C
19.
(b)
infinity
20.
(b)
Nkg-1
10th Standard Syllabus & Materials
10th Standard
Tamilnadu 10th Standard Social Science GEO - Climate and Natural Vegetation of India Important Questions And Answers Study Material - QB365 Set C
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - Climate and Natural Vegetation of India Important Questions And Answers Study Material - QB365 Set B
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - Climate and Natural Vegetation of India Important Questions And Answers Study Material - QB365 Set A
NEW10th Standard
Tamilnadu 10th Standard Social Science GEO - India - Location, Relief and Drainage Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
