1166: Examine the following statements regarding a set of balls :

I. All balls are black.
II. All balls are white.
III. Only some balls are black.
IV. No balls are black.

Assuming that the balls can only be black or white, which two statements given above can both be true, but cannot both be false ? Choose the correct answer from the codes given below :

Codes :

(a) I and IV
(b) I and III
(c) II and III
(d) III and IV
1167: The International Development Association, a lending agency, is administered by the

(a) International Bank for Reconstruction and Development

(b) International Fund for Agricultural Development

(c) United Nations Development Programme

(d) United Nations Industrial Development Organization
1168: Apart from Tamil Nadu (Neyveli), lignite is found at:

(a) Gujarat

(b) Uttar Pradesh

(c) West Bengal

(d) Orissa
1169: Consider the following statements in respect of a jet engine and a rocket:


1. A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.

2. A rocket carries its own supply of oxygen in the gas form, and fuel.

Which of the statements given above is/are correct ?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1170: With reference to the International Union for Conservation of Nature and Natural Resources (IUCN) and the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which of the following statements is/are correct?

1. IUCN is an organ of the United Nations and CITES is an international agreement between governments.
2. IUCN runs thousands of field projects around the world to better manage natural environments.
3. CITES is legally binding on the States that have joined it, but this Convention does not take the place of national laws.

Select the correct answer using the code given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3