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7th Standard
TN 7th Tamil பருவம் -1 இயல் 1 - அமுதத்தமிழ் - ஒன்றல்ல இரண்டல்ல Important Questions And Answers Study Material - QB365 Set A
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Published on: 26/08/2019
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Download Tamil Nadu 7th 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 most abundant type of atom is the universe is _____________
Helium
Hydrogen
Argon
Argon
2.
The smallest unit of an element is _____________
atom
molecule
compound
none
3.
The graphite refill used is pencil is made of element called ___________
graphit
carbon
silicon
sodium
4.
An element which is always lustrous, malleable and ductile is _______.
non-meta
metal
metalloid
gas
5.
Which one of the following is an example for a metal?
Iron
Oxygen
Helium
Water
6.
______________ is the total number atoms present in one molecule of an element, compound or a substance.
7.
There is ___________ oxygen atom is water molecule
8.
There are __________ hydrogen atoms in water molecule
9.
The first letter of a symbol of an element is always written as a__________ letter and the second letter as a _________ letter
10.
The name copper was taken from ___________
11.
________of some elements are derived from Latin or Greek names of the elements.
12.
Elements are made up of ________ kinds of atoms.
13.
________is the only non-metal conducts electricity.
14.
A compound containing one atom of carbon and two atoms of oxygen is_______.
15.
The smallest particle of matter that can exist by itself is ______.
16.
Lead is also known as plumbum.
17.
Sodium chloride is used as table salt and for flavoring and preserving food.
18.
Non-metals are usually, good conductors of heat and electricity.
19.
Non-metals are non-malleable.
20.
Metals are usually solids or gases at room temperature.
21.
Non-metals
22.
Gallium
23.
Element
24.
Sulphur
25.
CO2
1.
(b)
Hydrogen
2.
(a)
atom
3.
(b)
carbon
4.
(b)
metal
5.
(a)
Iron
6.
( )
Atomicity
7.
( )
1
8.
( )
2
9.
( )
capital, small
10.
( )
cypress
11.
( )
The Symbol
12.
( )
only one
13.
( )
Graphite
14.
( )
CO2
15.
( )
atom
16.
(a)
17.
(a)
18.
(b)
19.
(a)
20.
(b)
21.
dull and soft
22.
Mobile phones
23.
Robert Boyle
24.
Polyatomic molecule
25.
triatomic molecule
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Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
