NDA questions
2295 published questions with worked solutions.
- Which among the following is the popular method for manufacture of ammonia ?
- Which among the following is the correct arrangement of halogens in the increasing order of their oxidizing nature ?
- Equal volume of all gases, when measured at the same temperature and pressure, contain an equal number of particles. Who proposed...
- Sand falls vertically on a conveyor belt at a rate of 0·1 kg/s. In order to keep the belt moving at a uniform speed of 2 m/s, the...
- The power required to lift a mass of 8·0 kg up a vertical distance of 4 m in 2 s is (taking acceleration due to gravity as 10 m/s...
- One block of 2·0 kg mass is placed on top of another block of 3·0 kg mass. The coefficient of static friction between the two...
- A mass is attached to a spring that hangs vertically. The extension produced in the spring is 6 cm on Earth. The acceleration due...
- In an electric circuit, a wire of resistance 10 Ω is used. If this wire is stretched to a length double of its original value,...
- An electric bulb is rated as 220 V and 80 W. When it is operated on 110 V, the power rating would be :
- In the dispersion of white light by a common glass prism, which one among the following is correct ?
- Which one among the following is true for the speed of sound in a given medium ?
- Which one of the following telescopes contains only mirrors ?
- The streaming of light beams coming from the Sun through trees is said to have suggested that light travels in straight line. The...
- The potential difference between the two end terminals of an electric heater is 220 V and the current through it is 0·5 A. What...
- The heating element in an electric iron is usually made of
- Sita, 1·5 m high, stands before a plane mirror fixed on a wall to view her full image. What should be the minimum height of the...
- Galvanization is a method of protecting iron from rusting by coating with a thin layer of
- Which one of the following alloys contains a non-metal as one of its constituent ?
- Buckminster fullerene, which looks like a football, is an allotropic form of
- The green plants in a terrestrial ecosystem absorbs sunlight that falls on their leaves and convert it into food energy. The...