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Total distance covered by ‘A’ = 24 × 33 = 816 km Time taken to cover 120 km = 120/30 = 4 hours Time taken to cover remaining distance = 24 – 4 = 20 hours So, required speed = {(816 – 120)/20} = 34.8 km/h
Which of the following is a physical change?
The pH of a neutral solution is —
The gas used for filling weather balloons is-
The major constituent of air is
Milk tastes sour when kept in the open for sometimes due to the formation of-
The noble gas used in radiotherapy is
______is the process in which acids and bases react to form salts and water
The acid used in lead storage cells is-
The pH of a neutral solution is —
Formation of ozone hole is maximum over
