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基礎問題集 - 化学(CHEMISTRY)vol.5

問題数は全部で100問あり、そのうち20問がランダムに出題されます。

正解の選択肢は1つのみです。問題の解答・解説は最後に表示されます。

制限時間はありません。問題は毎回ランダムで出題される点にご注意ください。

1 / 20

Carbon dioxide is composed of:

2 / 20

p orbitals:

3 / 20

In a polyatomic ion the algebraic sum of the oxidation numbers is:

4 / 20

An equilibrium is defined as heterogeneous when:

5 / 20

The isotope ¹H:

6 / 20

Which of the following is a carbohydrate?

7 / 20

The ester bond is present:

8 / 20

Na has atomic number 11. Its electronic configuration is:

9 / 20

The symbol of sodium is:

10 / 20

Chlorine, at ambient temperature and pressure, is found only as a:

11 / 20

The pH of a sodium hydroxide solution with \([OH^-] = 10^{-2}\) gram-ions per litre is:

12 / 20

What is sucrose?

13 / 20

One mole of a gas under standard conditions:

14 / 20

Avogadro’s number represents the number of molecules contained in:

15 / 20

What does the atomic number indicate?

16 / 20

Across a period of the periodic table from left to right, metallic properties:

17 / 20

A sheet of pure copper weighs 254.184 g. Indicate how many moles of copper it contains if the molar mass of copper is 63.546 g.

18 / 20

Which of the following statements is CORRECT?

19 / 20

An orbital contains a number of electrons:

20 / 20

The compound KH corresponds to:

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