Tamil Nadu (English Medium) Std 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
When did Lothar mayer classified the elements ?

(A) 1860	(B) 1862
(C) 1864	(D) 1868

Question-2
Which is the heaviest metal ?

(A) Osmium	(B) Lithium
(C) Tungsten	(D) Gold

Question-3
By whom the elements are classified into metals and non-metals ?

(A) Dobereiner	(B) Lavoisier
(C) Mendeleev	(D) Newland

Question-4
Bronze is formed by the combination of :

(A) Copper and silver	(B) Copper and tin
(C) Silver and tin	(D) Silver and gold

Question-5
Among metals which is the best conductor of electricity ?

(A) Gold	(B) Silver
(C) Platinum	(D) Rubidium

Question-6
Who was the person who grouped three elements and termed as triad ?

(A) Lavoisier	(B) Dobereiner
(C) Mendeleev	(D) Newland

Question-7
The technology that is used to reduce the degradation of food and vegetables is :

(A) Bio technology	(B) Nano technology
(C) Chemical technology	(D) Degradation technology

Question-8
In modern periodic law, all the elements are sorted in the periodic function of their :

(A) Atomic number	(B) Atomic mass
(C) Ionic number	(D) Mass number

Question-9
Newland's classification of elements is termed as :

(A) Triad	(B) Law of octaves
(C) Periodicity	(D) Coinage

Question-10
Among the following which is a coinage metal ?

(A) Copper	(B) Nickel
(C) Silver	(D) a and c

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Std 9

Tamil Nadu (English Medium)

Practice in Related Chapters
Is Matter around us Pure
Atomic Structure
Chemical Bonds
Chemical Equation
Periodic Classification of Elements