The salinity and alkalinity of the soil can be removed by

Solution
Forestation
Where is waterloo situated?

Solution
Belgium
World Health Day is celebrated on

Solution
April 7
Which of the following is not matched correctly?

Solution
Masai EastMrican Plateau
Who is the director of the film ‘Sideways’ ?

Solution
Uarn Nissan
In the Skandha Purana Garhawal is known as

Solution
Kedarkhand
Astigmatism is a disease of

Solution
Astigmatism is the disease of eyes where both the eyes cannot focus on a single object at the same time.
The term ‘Butterfly’ is related to

Solution
Butterfly swimming is a special kind of swimming .
The ratio of the incomes of Ram and Shyam is 7: 17. and that of Shyam and Sohan is 7 : 17. If the income of Ram is Rs. 490. what is the income of Sohan ?

Solution
Ram: Shyam = 7: 17
Shyam : Sohan = 7 : 17
∴ Ram : Shyam : Sohan 7 : 17\(\frac{7:17}{49:119:289}\)
= 49 : 119 : 289
∴ 49 units = Rs. 490
∴ 289 units =\(\frac{490}{49}\times 289\)
= Rs. 2890
If the price of oil is increased by 25%.find by what per cent must a house holder reduce her consumption of oil so as not to increase the expenditure?

Solution
Let the consumption should be reduced by x %. So as per the question:
\(\frac{100+2}{100}\times \frac{100x}{100}=1\)
\(\Rightarrow 100x=\frac{100\times 100}{125}=80\)
⇒ x = 100  80 = 20%