set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 2 EXERCISES
The following question based on physical properties of materials topic of general science mcq
(a) Cohesive force
(b) Centrifugal force
(c) Gravitational force
(d) None of the above
The correct answers to the above question in:
Answer: (b)
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Read more physical properties of materials Based General Science Questions and Answers
Question : 1
A liquid is flowing in a streamlined manner through a cylindrical pipe. Alongwith a section containing the axis of the pipe, the flow profile will be
a)
b)
c)
d)
Answer »Answer: (d)
Question : 2
In the figure below is shown the flow of the liquid through a horizontal pipe. Three tubes A, B and C are connected to the pipe. The radii of the tubes A, B and C at the junction are respectively 2 cm, 1 cm and 2 cms. It can be said that A B C
a) height of the liquid in the tube A and tube B is the same
b) the height of the liquid in the tube A is maximum
c) height of the liquid in all the three tubes is the same
d) height of the liquid in tube A and C is the same
Answer »Answer: (d)
The rise of water in the capillary tube is inversely proportional to the radius, h = ${2T}/{rpg}$.
It is given that the radius of A and C are the same.
So, the height of the liquid in tubes A and C is the same.
Question : 3
If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change?
a) Density
b) Concentration
c) Mass
d) Volume
Answer »Answer: (d)
Question : 4
If two bubbles of soap of different diameter come in contact with a tube, then what will happen?
a) The smaller bubble will become smaller and bigger will become bigger
b) The smaller bubble will become larger and larger will become smaller to get the same size
c) The size of both the bubbles will remain same
d) Both bubbles will burst as soon as they come in contact
Answer »Answer: (a)
Question : 5
Oil spreads on water surface because
a) Oil is less dense than water
b) Surface tension of oil is more than water
c) Oil is denser than water
d) Surface tension of oil is less than water
Answer »Answer: (d)
Question : 6
Fish can survive in a frozen lake because
a) Fish hibernate in ice
b) Water near the bottom does not freeze
c) Fish are warm blooded animals
d) Ice is a good conductor of heat
Answer »Answer: (b)
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