Chemistry

Oxidation takes place at the anode during electrolysis because the anode?

A. is deficient in electrons B. is deficient in protons C. has excess electrons D. has attraction for positive ions…

6 years ago

In dry Leclanche cell, manganese (IV) oxide acts as?

A. a reducing agent B. binding agent C. catalyst D. depolarizer Correct Answer: Option D D. depolarizer

6 years ago

The high solubility of ethanol in water is due to its?

A. low boiling point B. low freezing point C. covalent nature D. hydrogen bonding Correct Answer: Option D D. hydrogen…

6 years ago

When 100 cm3 of a saturated solution of KCIO3 at 40oC is evaporated, 14 g of the salt is recovered what is the solubility of KCIO3 at 40oC? [KCIO3 = 122.5]

A. 11.42 mol dm-³ B. 8.80 mol dm-³ C. 1. 14 mol dm-³ D. 0.88 mol dm-³ Correct Answer: Option…

6 years ago

Which of the following compounds would dissolved in water to give a solution whose pH is less than 7?

A. AI(NO3)3 B. KNO3 C. N2O D. NH3 Correct Answer: Option A A. AI(NO3)3

6 years ago

An aqueous solution of CaCI2 is?

A. acidic solution B. alkaline solution C. a buffer solution D. a neutral solution Correct Answer: Option D D. a…

6 years ago

The colour of phenolphthalein indicator in dilute HNO3 is?

A. colourless B. orange C. pink D. purple Correct Answer: Option A A. colourless

6 years ago

Which of the following set of equations could be used to represent the standard enthalpy of formation of glucose?

A. 6C(s) + 6H2(g) + 3O2(g) → C6H12O6(s) B. 6CO2(g) + 6H2O(l) → C6H12O6(s) + 6O2(g) C. 6C(g) + 6H2(g) +…

6 years ago

Diamond does not conduct electricity because it?

A. has no free valence electrons B. is a giant molecule C. contains no bonded electrons D. is a solid…

6 years ago