Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
MCQs 171-180
49 plays

In this chapter, Binati discusses 10 MCQs.

Binati Sheth
An Avid Reader. A Teacher. An Aid worker. An Engineer (E&C). A Writer. Budding Art Connoisseur. A philomath. A Shōnen Otaku.

Unacademy user
Q 1 : C Q 2 : B Q 3 : C Q 4 : C Q 5 : A
  1. Educator Writer Translator Hi am Bimati Sheth

  2. Rate Review veddn't lve it Recommend Share facebook twitter etC Insta am

  3. Generan Knowiedpe for XAT

  4. Which of the following metals is found in the Free State? (a) Aluminium(b) Magnesium (c) Calcium (d) Copper

  5. Solution: d. Copper has a very low reactivity so it is found in the free state. Other three are highly reactive metals therefore they are never found in the free state.

  6. Consider the following statements I. 22 carat gold is an alloy. II. 24 carat gold is very hard Which of the above statements is/are true? (a) I (b) II (c) I and II (d) none 172

  7. Solution: a. 24 carat gold is very soft and hence not suitable for making ornaments. It is alloyed with either copper or silver to make it hard. In India, 22 carat id is used for making ornaments. It means 22 pa alloyed with 2 parts of either copper or silver.

  8. Amalgam is an allov that contains- (a) Zinc (b) Mercurjy (c) Tin (d) Copper 173

  9. Solution: b. Mercury combines with all the common metals except iron and platinum to form alloys that are called amalgams.

  10. Solder is an alloy of- (a)Tin and Copper (b) Zinc and Lead (c) Zinc and Copper (d) Tin and Lead 174

  11. Solution: d. Solder is an alloy of lead and tin (Pb and Sn). It is used for welding electrical wires together due to its low melting p. oint

  12. Consider the following statements: I. Pitcher plant is a homotroph. Which of the above statements is/are true? Protein is one of the products of photosynthesis in plants (a) I (b) I (c) I and II (d) none 176

  13. Solution: c. The inner walls of the small intestine have thousands of finger-like outgrowths called villi. The villi increase the absorption surface area for digestion providing efficient absorption of nutrients.

  14. Solution: a. Galvanisation is a process of depositing a layer of zinc on iron or steel to prevent rusting

  15. Lion-tailed macaque is naturally found in which of the following states? a) Gujarat (b) Madhya Pradesh (c) Kerala (d) Jammu and Kashmir 179

  16. Solution: c. The lion-tailed macaque (also called Beard ape) lives in the rain forests of Western Ghats. It is thought to be the rarest old world monkey and is in serious danger of extinction