Chemistry

If 60 cm³ of gas is heated from 27ºC TO 50ºC, what is the new volume of the gas at constant pressure?

A. 32.4cm³ B. 55.7cm³ C. 64.6cm³ D. 111.1cm³ Correct Answer: Option C C. 64.6cm³

6 years ago

Which of the following salts is readily soluble in water?

A. PbCI2 B. Pb(NO3)2 C. PbSO4 D. PbCO3 Correct Answer: Option B B. Pb(NO3)2

6 years ago

Glucose gives a brick-red precipitate with Fehling’s solution because it is?

A. carbohydrate B. an alkanoate C. a reducing sugar D. a non-electrolyte Correct Answer: Option C C. a reducing sugar

6 years ago

A solution of zinc chloride should not be stored in a container made of?

A. tin B. copper C. aluminium D. lead Correct Answer: Option C C. aluminium

6 years ago

Two solutions containing Pb²+ and AI³+ respectively can be distinguished using?

A. NaOH(aq) B. NH3(aq) C. conc. HCIO3 D. conc. HCI Correct Answer: Option D D. conc. HCI

6 years ago

What volume of hydrogen would be left over when 300cm3 of oxygen and 1000cm of hydrogen are exploded in a sealed tube? [2H2(g) + O2(g) → 2H2 Og]

A. 200 cm³ B. 400 cm³ C. 600cm³ D. 700cm³ Correct Answer: Option B B. 400 cm³ Explanation 2H2(g) +…

6 years ago

What quantity of electrons in moles is needed to discharge two moles of aluminum from aluminum oxide (AI2O3)

A. 1 B. 2 C. 4 D. 6 Correct Answer: Option D D. 6 Explanation One mole of aluminium from…

6 years ago

Which of the following substances will not produce effervescence with dilute hydrochloric acid?

A. Copper (ll) trioxocarbonate (IV) B. Potassium hydrogentrioxocarbonate (lV) C. Zinc granules D. Sodium chloride Correct Answer: Option D D.…

6 years ago

What are the values of x, y and z respectively in the following in the following equation? MnO2(s) + xHCI(aq) → MnCI2(g) + yHO(l) + zCI2(g)

A. 4,1, 2 B. 1, 2,1 C. 2,1, 2 D. 4, 2,1 Correct Answer: Option D D. 4, 2,1

6 years ago

Which of the following salts is not prepared by precipitation?

A. Lead (ll) trioxocarbonate (lV) B. Barium trioxocarbonate (IV) C. Sodium trioxocarbnate (IV) D. Calcium trioxocarbonate (IV) Correct Answer: Option…

6 years ago
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