logo

CuriousTab

CuriousTab

Discussion


Home General Knowledge Chemistry Comments

  • Question
  • The metal that is usually extracted from sea water is


  • Options
  • A. Ca
  • B. Na
  • C. K
  • D. Mg

  • Correct Answer
  • Mg 


  • Chemistry problems


    Search Results


    • 1. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

    • Options
    • A. 1/6
    • B. 1/3
    • C. 1/8
    • D. 1/4
    • Discuss
    • 2. The maximum number of isomers for an alkene with molecular formula C4H8 is

    • Options
    • A. 5
    • B. 4
    • C. 2
    • D. 3
    • Discuss
    • 3. The mass number of a nucleus is

    • Options
    • A. always less than its atomic number
    • B. the sum of the number of protons and neutrons present in the nucleus
    • C. always more than the atomic weight
    • D. a fraction
    • Discuss
    • 4. The formula C6H5-CO-CH3 represents

    • Options
    • A. Acetone
    • B. Acetic acid
    • C. Acetophenone
    • D. Phenyl acetate
    • Discuss
    • 5. The Latin word formica means ant. The name formic acid is derived from this Latin word because

    • Options
    • A. this acid, in ancient times, was used to eliminate ant-hills
    • B. this corrosive acid is secreted by ants to drive away their enemies
    • C. this acid was first obtained by the distillation of ants
    • D. ants are attracted by the odour of this acid
    • Discuss
    • 6. Which of the following drainage systems fall into Bay of Bengal?

    • Options
    • A. Ganga, Brahmaputra and Godavari
    • B. Mahanadi, Krishna and Cauvery
    • C. Luni, Narnada and Tapti
    • D. Both (a) and (b)
    • Discuss
    • 7. Which of the following countries leads in the production of aluminium and its products in the world?

    • Options
    • A. Australia
    • B. France
    • C. India
    • D. USA
    • Discuss
    • 8. The only state in India that produces saffron is

    • Options
    • A. Assam
    • B. Himachal Pradesh
    • C. Jammu and Kashmir
    • D. Meghalaya
    • Discuss
    • 9. The most ideal region for the cultivation of cotton in India is

    • Options
    • A. the Brahmaputra valley
    • B. the Indo-Gangetic valley
    • C. the Deccan plateau
    • D. the Rann of Kutch
    • Discuss
    • 10. Unlike other parts of the Indian Coast, fishing industry has not developed along the Saurashtra coast because

    • Options
    • A. there are few indentions suitable for fishing
    • B. of overwhelming dependence on agriculture and animal husbandary
    • C. the sea water is relatively more saline
    • D. of industrial development leading to widespread pollution of coastal area
    • Discuss


    Comments

    There are no comments.

Enter a new Comment