Everyday Science Mcqs CSS,PMS,Fpsc,IB Test Preparation

Q: One horse power is equal to
(a) 736 watts
(b) 746 watts
(c) 756 watts
(d) None of these
View Answer
(b) 746 watts
Q: Dynamo is a device that converts
(a) Mechanical energy into electrical energy
(b) Electrical energy into mechanical energy
(c) Alternating current into direct current
(d) None of these
View Answer
(a) Mechanical energy into electrical energy
Q: Total internal reflection occurs when light travels from
(a) A rarer medium to a denser medium
(b) A denser medium to a rarer medium
(c) A rarer medium to a denser medium and the angle of incidence is less than the critical angle
(d) None of these
View Answer
(b) A denser medium to a rarer medium
Q: . A chair is tilted about two of its legs and then left. It would return to its original position if
(a) Its center of gravity falls outside the base
(b) Its center of gravity falls within the base
(c) It is tilted through an angle of 60°
(d) None of these
View Answer
(b) Its center of gravity falls within the base
Q: Heat from the sun is received by the earth through
(a) Conduction
(b) Convention
(c) Radiation
(d) None of these
View Answer
(c) Radiation
Q: The picture tube of a black and white T.V. set has only one electron ‘gun’ that produces the picture on its screen. The number of electron gun’ a color picture tube has, is
(a) Three
(b) Four
(c) Six
(d) None of these
View Answer
(a) Three
Q: Which one of the following elements is extensively used in electronics?
(a) Zirconium
(b) Silicon
(c) Sodium
(d) None of these
View Answer
(b) Silicon
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