Questions

The general properties of acids are as follows :-

1.They are sour to taste.

2.They turn blue litmus paper red but the red litmus paper have no effect of acids and it remains unaffected.

3.They release hydrogen ions H+ in the solution medium, making the conditions acidic.

Hygrometer is used for measuring humidity of air.

The phrase ‘almost terrible as’ needs to be replaced with ‘almost as terrible as’ to make the sentence correct. This is because, ‘As...As’ is the pair of words that needs to be used together. Thus, the correct sentence would be, ‘For young Donald, peace in Vietnam was almost as terrible as war’.

'Are’ needs to be replaced with ‘is’ to make the sentence contextually correct. This is because, ‘in subject verb agreement, we match the subject with the nearest verb or the verb with the nearest or the first subject. But the verb should be matched with the main subject of the sentence’. Here the main subject is ‘Ignorant’ which is singular and so is followed by a singular verb.