NDA questions
2295 published questions with worked solutions.
- Two astronauts X and Y float in deep space far from external forces. Initially, they are at rest relative to one another. X...
- A uniform rope hangs symmetrically over a smooth pulley. One end of the rope is given a slight mass, making that side slightly...
- An insulating container contains 250 g of water at 20°C. Steam at 100°C is passed through it, heating it up to 25°C. During this...
- Three parallel glass slabs of refractive indices 1·5, 3 and 1·5 respectively have widths 2 mm, 1 mm and 4 mm. The combination is...
- Two point charges of 4 C and 16 C are kept at a distance of 0·18 m. A third point charge of 1 C is kept between them such that...
- Consider the following statements in respect of sound waves : I. The speed of sound waves decreases with an increase in...
- Consider the following statements : Statement-I : Marine animals remain alive in winter and move near the bottom of lakes despite...
- Consider the following statements regarding oxidation numbers : I. The oxidation number of oxygen in peroxides and superoxides is...
- Consider the following statements regarding the properties of hydrogen and water : I. Tritium, the isotope of hydrogen, is...
- Consider the following statements regarding nitrogen : I. Nitrogen contains a triple bond. II. Nitrogen is a triatomic gas. III....
- In a dry test tube, 2 mL of HCl (0·1 N) is taken. To this, 4 mL of NaOH (0·1 N) is added. The solution is stirred well, followed...
- Consider the following statements : I. A solution of iodine in ethanol known as 'tincture of iodine' is a heterogeneous mixture....
- Consider the following statements : I. A 30% solution of hydrogen peroxide is marketed as '10 volume' H_2O_2. II. In the compound...
- Consider the following pairs : Chemical Reaction : Type of Chemical Reaction I. Fe ,(s) + CuSO_4 ,(aq.) FeSO_4 ,(aq.) + Cu ,(s) :...
- Coconut oil upon hydrolysis with potassium hydroxide gives :
- Consider the following statements regarding hydrogen bonds : I. Hydrogen bonds can only form when hydrogen is bonded to oxygen,...
- Ionic compounds have high melting and boiling points. This is due to :
- Consider the following pairs : Example of Colloid : Type of Colloid I. Cloud : Aerosol II. Mud : Sol III. Milk : Emulsion IV....
- Consider the following statements in relation to respiration in animals : I. Glucose breaks down into pyruvate in the cytoplasm...
- Which of the following cells form components of complex permanent tissue in plants ? I. Companion cells II. Sieve tubes III....