CIE Chemistry Paper-1: Specimen Questions 73 - 75 of 99

Passage

In the below questions. Complete the following puzzle.

Complete the puzzle above

Complete the puzzle above

Find the missing values in the questions.

Question number: 73 (4 of 6 Based on Passage) Show Passage

MCQ▾

Question

ACROSS: At position 46, an element with atomic number 6.

Choices

Choice (4) Response
a.

Oxygen

b.

Nitrogen

c.

Silicon

d.

Neon

Answer

a.

Explanation

Carbon is a chemical element with symbol C and atomic number 6. On the Periodic table, it is the first (row 2) of six elements in column (group) 14, which have in common the composition of their outer electron shell. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds.

 Completed Puzle given in the question

Completed Puzle given in the question

Names of the gases completed asked in the question

Question number: 74 (5 of 6 Based on Passage) Show Passage

MCQ▾

Question

ACROSS: At position 49, an inert monatomic gas with atomic no 10.

Choices

Choice (4) Response
a.

Neon

b.

Helium

c.

Krypton

d.

Argon

Answer

a.

Explanation

Neon is a chemical element with symbol Ne and atomic number 10. It is in group 18 of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.

 Completed Puzle given in the question

Completed Puzle given in the question

Names of the gases completed asked in the question

Question number: 75 (6 of 6 Based on Passage) Show Passage

MCQ▾

Question

ACROSS: At position 47, a gas with atomic number 3.

Choices

Choice (4) Response
a.

Lithium

b.

Argon

c.

Helium

d.

Neon

Answer

a.

Explanation

Lithium is a chemical element with symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.

 Completed Puzle given in the question

Completed Puzle given in the question

Names of the gases completed asked in the question

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