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Generan Knowiedpe for XAT
Which of the following elements is a metalloid? (a) Bismuth (b) Silicon (c)Tin(d) Phosphorus 191
Solution: b. Metalloids are elements which possess characters of both metals and non metals. Silicon is a metalloid. Bismuth and tin are metals while phosphorus is a non metal.
Consider the following statements I. Metal oxides are acidic in nature. II. Naphthalene is an inorganic compound Which of the above statements is/are true? (a) I (b) II (c) I and II (d) none 192
Solution: Metal oxides are basic in nature. Naphthalene is an organic compound with formula C10H8
Red Data Book is a book which keeps a record of (a) earthquakes (b) cyclones (c) endangered species (d) nuclear reactors 193
Solution: l Data Book contains li
Consider the following statements I. The cells having nuclear material without nuclear membrane are known as eukaryotic cells II. Blue green algae are prokaryotic organisms. Which of the above statements is/are correct? (a) I (b) II (c) I and II (d) none 194
Solution: b. Cells having well organised nucleus with a nuclear membrane are called eukaryoti(c) On the other hand, cells having nuclear material without nuclear membrane are prokaryoti(c) Bacteria and blue green algae are prokaryotic organisms.
Consider the following statements I. Crocodile is an oviparous animal. II. Snakes exhibit binary fission reproduction Which of the above statements is/are correct? (a) I (b) II (c) I and II (d) none
Solution: c. The pair of sex chromosomes in a boy is XY and in a girl is XX. nd in a oir
Solution: a. Pituitary gland is the master endocrine gland in vertebrate animals. The hormones secreted by the pituitary stimulate and control the functioning of almost all the other endocrine glands in the body
Goitre is a disease of the. (a) Pancreas (b) Liver (c) Thyroid gland (d) Adrenal gland 199
Solution: c. Goitre is an enlargement of the thyroid gland which happens when the thyroid gland stops producing the hormone thyroxine.
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