4451: Who among the following founded Ramakrishna Mission?
(a) Swami Dayanand Saraswati
(b) Raja Rammohan Roy
(c) Swami Vivekananda
(d) None of these
4452: 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
4453: The Indian National Congress agreed in 1947 to the partition of the country mainly because
(a) the principle of two-Nation theory was then acceptable to them
(b) it was imposed by the British Government and the Congress was helpless in this regard
(c) they wanted to avoid large-scale communal riots
(d) India would have otherwise lost the opportunity to attain freedom
4454: Thyagaraja of 18th century was:
(a) The greatest musician who composed his songs in Telugu
(b) The greatest Kathak dancer
(c) The greatest playwright of Tamil
(d) The greatest Sanskrit poet
4455: If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven, the potato heats up but the paper plate does not. This is because:
(a) Potato contains water whereas paper does not contain water
(b) Potato transmits microwaves whereas paper reflects microwaves
(c) Potato is mainly made up of starch whereas paper is mainly made up of cellulose
(d) Potato is a fresh organic material whereas' paper is a dead organic material