General Science Questions and Answers

When a coil is rotated in magnetic field, induced current is generated in the coil. This principle is used in making ?

Distant objects can be seen with the help of

The safety fuse should have

Greenhouse is?

Given below are some of the home appliances: 1. 1/8 H.P. Water pump 2. Fluorescenttubelight 3. Room heater 4. Night lamp Which of the following is the correct sequence in decreasing order of the wattage of the above?

Which of the following is/are true regarding the third (thicker) pin in a 3-pin plug? 1. It ensures better electrical contact. 2. It is connected to the body of the electrical device. 3. It is connected to the earth terminal. 4. It is connected to the neutral terminal.

Consider the following statements about a thermos flask: 1. It is a practical device in which the beat flowing into or out of the system by conduction, convection or radiation is reduced as much as possible. 2. It consists of a double – walled glass vessel. 3. The heat transfer by convection is minimized by silvering the surfaces and the radiation is minimized by evacuating the space between the walls. Of these, the correct ones are

In an ordinary dry cell, the electrolyte is

Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers etc. ?

The mixed oxide fuel is used for which of the following?