276: Where does exchange of gases (O2 and CO2) take place in our lungs ?

(a) Alveoli

(b) Bronchi

(c) Pleura

(d) Trachea
277: Consider the following liquid assets :

1. Demand deposits with the banks

2. Time deposits with the banks

3. Savings deposits with the banks

4. Currency

The correct sequence of these assets in the decreasing order of liquidity is

(a) 1 - 4 - 3 - 2
(b) 2 - 3 - 1 - 4
(c) 4 - 1 - 3 - 2
(d) 4 - 3 - 2 - 1
278: North India gets rainfall due to:

(a) Northern cold winds

(b) South-West monsoons

(c) North-East monsoons

(d) Western disturbances
279: Gopal, Harsh, Inder, Jai and Krishnan have Ahmedabad, Bhopal, Cuttack, Delhi and Ernakulam as their hometowns (Not necessarily in that order). They are studying in Engineering, Medical, Commerce, Economics and History Colleges (Not necessarily in that order). None of the five boys is studying in his hometown, but each of them studies in one of the cities given above.
Further it is given that:

(i) Gopal's hometown is Ernakulam.

(ii) Harsh is not stuyding in Ahmedabad or Bhopal.

(iii) Economics College is in Bhopal.

(iv) Inder's hometown is Cuttack.

(v) Krishnan is studying in Delhi.

(vi) Jai is studying in Ernakulam and the History College is in his hometown Ahemdabad.

(vii) Engineering College is situated in Ernakulam


If Inder studies in Ahmedabad, then which of the following is the correct combination of Person-Hometown-Place of Study?

(A) Harsh-Bhopal-Delhi
(B) Krishnan-Delhi-Ernakulam
(C) Jai-Ahemdabad-Ernakulam
(D) Gopal-Ernakulam-Delhi
280: Mixed cropping is useful when:

(a) Crops with varying maturity periods are sown together

(b) Crops with same maturity period are sown together

(c) Different soils are used for the same crops

(d) Crops with different nutritional requirements are grown