821. The speed of Sound is maximum in which of the following ?
A. Air at zero degree C
B. Air at 100 degree C
C. Water
D. At all places it is maximum
✅ The correct answer is option C.
SSC
822. Which among the following is in action in the process of a liquid rising in the syringe when the piston is pulled up?
A. Capillary action
B. surface tension
C. atmospheric pressure
D. cohesive forces
✅ The correct answer is option C.
823. Which among the following denotes the correct usage of an instrument called ―Theodolite‖?
A. Measures distances, elevations, bearings etc
B. Measures rotational speed of a shaft
C. Measures horizontal and vertical angles in triangular networks
D. Measures acidity or alkalinity of solutions
✅ The correct answer is option C.
824. Who among the following is considered by the Indian scientific community to be the father of experimental fluid dynamics research in India and one of the most eminent researchers in the field of turbulence and boundary layers?
A. Suhas V. Patankar
B. Satish Dhawan
C. M O Smith
D. JC Bose
✅ The correct answer is option B.
825. On which of the following the jet Engine works?
A. Conservation of energy
B. Conservation of Linear Momentum
C. Conservation of Mass
D. Conservation of Angular momentum
✅ The correct answer is option B.
826. Which among the following is the property of Tungsten which makes it eligible to use in the bulbs?
A. highest melting point
B. highest resistance
C. Highest malleability
D. All are correct
✅ The correct answer is option A.
827. In which of the following situations the force applied by the weight of a person becomes zero in a lift
A. Lift moves up with an acceleration of 9.8 meter per sq. second
B. Lift moves down with an acceleration of 9.8 meter per sq. second
C. Lift moves up with an speed of 9.8 meter per second
D. Lift moves up with down speed of 9.8 meter per second
✅ The correct answer is option B.
828. Which among the following is known for a FBTR (fast Breeder Test Reactor) ?
A. Naror
B. Trombay
C. Kalpakam
D. None of the above
✅ The correct answer is option C.
829. A person who is pulling a bucket filled with water falls behind with the sudden break of the rope. Which of the following laws of Newton comes into action?
A. First Law
B. Second law
C. Third law
D. First and third law
✅ The correct answer is option C.
830. What is TERLS?
A. A rocket launching Station
B. A Space Science & Technology Center
C. A satellite launched by India
D. A satellite launched by USA
✅ The correct answer is option A.