NDA questions
2295 published questions with worked solutions.
- Which one of the following elements is used in pencil-lead ?
- A positive charge +q is placed at the centre of a hollow metallic sphere of inner radius a and outer radius b. The electric field...
- Which one of the following statements about microbes is not correct ?
- An object moves in a circular path with a constant speed. Which one of the following statements is correct ?
- The force acting on a particle of mass m moving along the x-axis is given by F(x) = Ax^2 - Bx. Which one of the following is the...
- The symbol of SI unit of inductance is H. It stands for
- In a vacuum, a five-rupee coin, a feather of a sparrow bird and a mango are dropped simultaneously from the same height. The time...
- Electron emission from a metallic surface by application of light is known as
- Radioactivity is measured by
- Which one of the following waves is used for detecting forgery in currency notes ?
- The majority charge carriers in a p-type semiconductor are
- The ionization energy of hydrogen atom in the ground state is
- Which compound, when dissolved in water, conducts electricity and forms a basic solution ?
- The proposition 'equal volumes of different gases contain equal numbers of molecules at the same temperature and pressure' is...
- Which of the following statements about magnetite ore of iron is/are correct ? 1. It is known as black ore. 2. It contains 60% to...
- The term 'Probiotic' is applied to
- Which one of the following microbes causes acidification and curding of milk ?
- Who among the following shared the Nobel Prize in 1962 along with Francis Crick and James Watson for their discoveries concerning...
- Concave mirror is used in headlights of vehicles, because it
- If some object is weighed when submerged in water, what will happen to its weight compared to its weight in air ?