Questions

Henry's Law tells that the solubility of a gas is directly proportional to the partial pressure of the gas above the solvent. Hence under high pressure, more gas is dissolved.

Also that Henry's Law involves a constant which is temperature-dependent. Under high temperatures, less gas is dissolved whereas under low temperatures, more gas is dissolved.

For Example ::  

You can think of a can of soda. The contents are under pressure and if you shake the can before opening, the soda fizzes out all over as you open it. So the higher the pressure, the more gas or more CO2 can be dissolved in the drink.

Eliminate choices 1 and 2. Now focus on the temperature. Soda goes flat (loses carbonation or gas) as it warms up. Soda is usually served cold because more of the carbonation or CO2 stays in the drink when the soda is cold.

Hence, in high pressure and low temperature conditions gases are most soluble in water.

From first figure : each fig has the value of 20 => It has inside 4 figures => Each individual figure has the value of '5'

From second => Each Triangle has the value of '1' (bcoz it contains two in each)

From third => Figure star has the value of '4'

Then in fourth => 4 + 1 + 15 = 20

Foreign Affairs Ministry has turned down the proposal to rename West Bengal to ‘Bangla’, citing diplomatic confusion over similarities with the neighbouring country Bangladesh, according to reports. The West Bengal Assembly had passed a resolution last year stating that the name of the state would be changed to ‘Bangla’ in Bengali, ‘Bengal’ in English and ‘Bangal’ in Hindi.

The Alaknanda is a Himalayan river in the Indian state of Uttarakhand and one of the two headstreams of the Ganga. Badrinath is situated on the bank of river Alaknanda.

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