General Science

Q2301.In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because

Q2302.Fish can survive in a frozen lake because

Q2303.Increasing the amount of a substance does not change its

Q2304.If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change?

Q2305.The density of water will reach its maximum value at the temperature of

Q2306.At which temperature density of water is maximum?

Q2307.The maximum density of water is at

Q2308.Why does an iron nail float on mercury while it sinks in water?

Q2309.A needle sinks in water whereas a ship made of iron floats on it because

Q2310.An iron needle floats on the surface of water due to

Q2311.While lifting a bucket of water from a well, we feel that the bucket

Q2312.200 gm of water is filled in a weightless balloon. Its weight in water will be

Q2313.The separation of cream from milk by churning is due to

Q2314.The clouds float in the atmosphere because of their low

Q2315.Which of the following elements was first produced artificially?

Q2316.While floating in a sea what part of an iceberg is above the surface of the sea?

Q2317.An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It

Q2318.A body floats at 4ºC water. If temperature reaches 100ºC, then

Q2319.Why it is easier to swim in the sea than in a river?

Q2320.When a ship enters a sea from a river, what happens?