a calorimeter of thermal capacity 80j contains 20g of water at 25oC. Water at 100oC…
a calorimeter of thermal capacity 80j contains 20g of water at 25oC. Water at 100oC is added so…
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Which of the following elements is the best absorber of X-rays?
Which of the following elements is the best absorber of X-rays? A. hydrogen B. oxygen C. calcium D.…
High Tension(H.T.) transmission means
High Tension(H.T.) transmission means A. to transmit a given amount of power, the tension in the conducting wire…
The best material for the core of the primary and secondary coils of an induction…
The best material for the core of the primary and secondary coils of an induction coil is A.…
Which of the following statements about sound is NOT true?
Which of the following statements about sound is NOT true? A. sound is a longitudinal wave B. sound…
In sunlight, a blue flower looks blue because we see the flower by the light…
In sunlight, a blue flower looks blue because we see the flower by the light it A. recieves…
In a compound microscope
In a compound microscope A. there is only one lens B. the objective lens have a shorter focal…
If the volume of a fixed mass of a gas is kept constant, the pressure…
If the volume of a fixed mass of a gas is kept constant, the pressure of the gas…
The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9,…
The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A…
Heat is supplied to a block of ice 0o until half of it has melted….
Heat is supplied to a block of ice 0o until half of it has melted. Which of the…