3906: Mica is abundantly used in which of the following industries?

(a) Cement

(b) Electrical

(c) Plastic

(d) Fire resistance bricks
3907: Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because

(a) barium allows X-rays to pass through the stomach on account of its transparency to X-rays

(b) barium compound, like magnesium sulphate helps in cleaning the stomach before X-ray examination

(c) barium is a good absorber of X-rays and this helps the stomach to appear clearly in contrast with the other regions in the picture

(d) barium salts are white in colour and this helps the stomach to appear clearly in contrast with other regions in the picture
3908: According to the Constitution of India, the term district judge shall not include

(a) chief presidency magistrate

(b) sessions judge

(c) tribunal judge

(d) chief judge of a small cause court
3909: Savanna grasslands are found in

(a) North America

(b) Africa

(c) Australia

(d) East Asia
3910: What is/are the most likely advantages of implementing 'Goods and Services Tax (GST)'?

1. It will replace multiple taxes collected by multiple authorities and will thus create a single market in India.
2. It will drastically reduce the 'Current Account Deficit' of India and will enable it to increase its foreign exchange reserves.
3. It will enormously increase the growth and size of economy of India and will enable it to overtake China in the near future.

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