Question
Which city was ranked as the world’s most polluted
city in the 2024 Air Quality Index Report?Solution
Lahore was ranked as the world’s most polluted city in the 2024 Air Quality Index Report, surpassing New Delhi and Beijing.
The coefficient of volume expansion of glycerin is 49 × 10-5 K-1. Find the fractional change in its density for a 20°C rise i...
A displacement-time graph is curved and concave downward from t = 0 to t = 2 s. Which statement is true?
A constant retarding force of 60 N is applied to a body of mass 25 kg moving initially with a speed of 12 m s–1. How long does the body...
A current element is placed at origin. At point P(1 mm,1 mm), the magnetic field due to this element is:
An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is New...
What happens to resistance of a wire when its length is doubled (keeping area constant)?
Which one of the following is not a function of the liver?
A capacitor of 4 µF is charged to 100 V. It is then connected across an uncharged 2 µF capacitor. Final common voltage is:
In cricket match, while catching a fast moving ball, a fielder in the ground gradually pulls his hands backwards with the moving ball to reduce the velo...
Which of the following decays does not change the atomic number of the nucleus?
