NDA questions
2295 published questions with worked solutions.
- Red blood cells (RBCs) have
- The amount of heat required to change a liquid to gaseous state without any change in temperature is known as
- A circular coil of single turn has a resistance of 20 Ω. Which one of the following is the correct value for the resistance...
- In a solenoid, the current flowing through the wire is I and number of turns per unit length is n. This gives a magnetic field B...
- Which one of the following statements is correct about the magnification of an optical microscope ?
- A homogeneous mixture contains two liquids. How are they separated ?
- Which one of the following elements corrodes rapidly ?
- 20 g of common salt is dissolved in 180 g of water. What is the mass percentage of the salt in the solution ?
- The valency of an element depends upon the
- Match List I with List II and select the correct answer using the code given below the Lists : List I (Noble gas) A. Argon B....
- The radii of curvature of the faces of a double convex lens are 10 cm and 20 cm. The refractive index of the glass is 1·5. What...
- The time period of a simple pendulum made using a thin copper wire of length L is T. Suppose the temperature of the room in which...
- Which one of the following physical quantity has the same unit as that of pressure ?
- Which one of the following statements is correct with regard to the material of electrical insulators ?
- Suppose a rod is given a negative charge by rubbing it with wool. Which one of the following statements is correct in this case ?
- Which one of the following is the correct relation between frequency f and angular frequency ?
- A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. What would be the...
- If the potential difference applied to an X-ray tube is doubled while keeping the separation between the filament and the target...
- Which one of the following statements is true for the relation F = Gm_1m_2 r^2 ? (All symbols have their usual meanings)
- Why is it difficult to measure the coefficient of expansion of a liquid than solid ?