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
Micrometer screw gauge is used to measure very small objects to

(A) 1 cm	(B) 0.1 cm
(C) 0.01 cm	(D) 0.001 cm

Question-2
The most accurate time measurement device is:

(A) Quartz clock	(B) Electrical Oscillators
(C) Caesium - atomic clock	(D) Seconds Pendulum

Question-3
Name a device used to measure the short time intervals?

(A) Wrist watch	(B) Stop watch
(C) Screw gauge	(D) Vernier caliper

Question-4
Which of the following is the SI unit for length?

(A) Centimetre	(B) Metre
(C) Kilometre	(D) Mile

Question-5
Which of the following instrument is used to measure the internal diameter of a pipe with a single measurement?

(A) Manometer	(B) Measuring cylinder
(C) Micrometer screw gauge	(D) Vernier calipers

Question-6
Which of the following scientist designed the vernier scale?

(A) Albert vernier	(B) Pierre vernier
(C) Newton	(D) Faraday

Question-7
Which of the following instrument helps to measure very tiny materials in general chemistry labs ?

(A) Weigh bridge	(B) Medical scale
(C) Physical balance	(D) Digital balance

Question-8
Atomic clock works on periodic vibration taking place in

(A) Uranium atom	(B) Plutonium atom
(C) Carbon atom	(D) Ceasium atom

Question-9
Which of the following is the part of a vernier caliper that is used for measuring the external diameter of a cylindrical tube?

(A) Outside jaw / external jaw	(B) Inside jaw / internal jaw
(C) Tail	(D) None of the above

Question-10
Force of gravity on a body is called

(A) Density	(B) Weight
(C) Pressure	(D) Acceleration

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Std 9

Tamil Nadu (English Medium)

Practice in Related Chapters
Motion and Liquids
Sound
Work, Power, Energy and Heat
Measuring Instrument