Science Practice Quiz 36

Q1.Based on the provided text, what is the fundamental element upon which all living structures are based?

A. Oxygen B. Nitrogen C. Carbon D. Hydrogen

Q2.What is the approximate percentage of carbon present in the Earth's crust?

A. 0.02% B. 0.03% C. 0.20% D. 2.00%

Q3.As per the provided text, what percentage of carbon dioxide is present in the Earth's atmosphere?

A. 0.02% B. 0.03% C. 0.30% D. 3.00%

Q4.In what forms is carbon primarily found in the Earth's crust?

A. As free elemental carbon and diamonds. B. In the form of minerals like carbonates, hydrogen-carbonates, coal, and petroleum. C. Mainly as atmospheric carbon dioxide. D. Exclusively as graphite and fullerenes.

Q5.Which of the following items are stated to be based on the versatile element carbon in the provided text?

A. Only metals and glass. B. Food, clothes, medicines, and books. C. Only water and air. D. Primarily noble gases.

Q6.According to the section heading in the text, what type of bond is specifically discussed in relation to carbon?

A. Ionic bond B. Metallic bond C. Covalent bond D. Hydrogen bond

Q7.Which of the following properties are attributed to ionic compounds in the provided text?

A. Low melting and boiling points and do not conduct electricity. B. High melting and boiling points and conduct electricity in solution or molten state. C. High melting points but do not conduct electricity. D. Low boiling points and conduct electricity only in solid state.

Q8.What is the electronic configuration of helium in its K shell?

A. One electron B. Two electrons C. Three electrons D. Four electrons

Q9.How is a single covalent bond typically represented between two atoms?

A. By a double line B. By a single line C. By a dotted line D. By a curved arrow

Q10.What is the atomic number of chlorine?

A. 15 B. 16 C. 17 D. 18

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Science Practice Quiz 36