NDA questions
2295 published questions with worked solutions.
- It has been observed that a mirror always forms the image between the pole and the focus, irrespective of the location of the...
- What is the upward force acting on a skydiver of mass 60 kg who is falling at a uniform speed of 2 m/s?
- With respect to electromagnetic waves, the human eye is sensitive to
- If x is the number of electrons and y is the number of nucleons present in ^ 32 _ 16 S^ 2- , then which one of the following is...
- Which one of the following forms of carbon is thermodynamically most stable?
- Consider the following statements : I. A colloid and a suspension are heterogeneous mixtures. II. Colloids can be separated from...
- A non-volatile solid solute may be separated from a solution by which of the following processes? I. Evaporation II....
- Which of the following are oxidation reactions? I. Rusting of iron II. Burning of fuel III. Rancidity of oils and fats IV....
- Consider the following statement : "Acids are substances that dissociate in water to give hydrogen ions H^+ (aq), and bases are...
- Superphosphate of lime—a phosphate fertilizer—is obtained by the reaction of
- 1·7 g of silver nitrate is dissolved in 100 g of water, and 0·585 g of sodium chloride is dissolved in 100 g of water. Both are...
- Consider the following statements : I. Pine oil is used as antifoaming agent in the emulsion paints. II. Protective colloids are...
- Consider the following statements : I. Soaps are sodium or potassium salts of long-chain carboxylic acids. II. The properties of...
- Consider the following pairs of reactions and properties : Reactions : Properties I. Fe ,(s) + 2HCl ,(aq) FeCl_2 ,(aq) + H_2 ,(g)...
- Which of the following properties of alveoli is/are helpful in gaseous exchange during respiration in human beings? I. The...
- In which one of the following groups of animals, oestrus cycle is not observed?
- Which one of the following tissues in plants is usually without protoplast and regarded as dead cells?
- In which cell does the first meiotic cell division take place during the process of spermatogenesis?
- Consider the following statements in respect of cell and its structure : I. All cells possess cell wall. II. All cells have...
- Which part of the plant or flower contributes in the form of false fruit like apple?