Chemistry

They hydrolysis of NH4CI gives?

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

6 years ago

A spot of oil paint on a shirt can best be removed using?

A. brine B. detergent C. kerosine D. warm water Correct Answer: Option B B. detergent

6 years ago

Which of the following pH values indicates that a solution is a strong base?

A. 1 B. 5 C. 9 D. 13 Correct Answer: Option D D. 13

6 years ago

On heating, the following trioxocarbonate (IV) salts decompose to give solid residue except?

A. ammonium trioxocarbonate (IV) B. calcium trioxocarbonate (IV) C. lead (ll) trioxocarbonate(IV) D. zinc trioxocarbonate (IV) Correct Answer: Option A…

6 years ago

A substance L reacts with NH4NO3(aq) to generate ammonia gas. L is likely to be?

A. HCI B. NaOH C. CH3COOH D. CaSO4 Correct Answer: Option B B. NaOH

6 years ago

The energy evolved when magnesium burns in air is in the form of?

A. heat B. heat and sound C. light and heat D. sound Correct Answer: Option C C. light and heat

6 years ago

Which of the following gases has the lowest rate of diffusion under the same condition? [H = 1.00; He = 4. 00; O = 16.0; CI = 35.5]

A. CI2 B. H2 C. He D. O2 Correct Answer: Option A A. CI2

6 years ago

The oxidation number of Fe in [Fe(CN)6]3- is?

A. +3 B. +2 C. -2 D. -3 Correct Answer: Option A A. +3

6 years ago

The postulate that molecules are in constant random motion best explains why liquids?

A. can undergo solidification B. maintain their volumes C. are incompressible D. have no characteristic shape Correct Answer: Option A…

6 years ago

At ordinary temperature H2O is a liquid while H2S is a gas. This is because H2O has?

A. weak intermolecular forces holding its molecules together B. strong hydrogen bonds holding its molecules together C. induced dipole-induced dipole…

6 years ago
Show more Posts
Show previous Posts