A plastic which cannot be softened by heat is described as?
A plastic which cannot be softened by heat is described as? A. thermosetting B. non-biodegradable C. thermoplastic D. malleable Correct Answer: Option A A. thermosetting
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Biotechnology is applied in the following except?
Biotechnology is applied in the following except? A. baking industry B. wine production C. production of antibiotics D. manufacture of soap Correct Answer: Option D D. manufacture of...
Read MoreWhich of the following on burning in air contributes to acid rain?
Which of the following on burning in air contributes to acid rain? A. Sulphur B. Magnesium C. Aluminium D. Zinc Correct Answer: Option A A. Sulphur
Read MoreWhen sodium hydroxide solution is added to a solution of zinc salt, the white precipitate formed redissolves in excess sodium hydroxide because?
When sodium hydroxide solution is added to a solution of zinc salt, the white precipitate formed redissolves in excess sodium hydroxide because? A. sodium is more reactive than zinc B. sodium hydroxide is a strong alkali C. zinc...
Read MoreA colourless, odourless liquid T, gives effervesce with sodium trioxocarbonate (IV) and a white precipitate with silver trioxonitrate (V) solution T is most probably
A colourless, odourless liquid T, gives effervesce with sodium trioxocarbonate (IV) and a white precipitate with silver trioxonitrate (V) solution T is most probably A. sodium chloride soluttion B. barium chloride solution C....
Read MoreWhich of the following needs to be hydrolyzed before it shows reducing property?
Which of the following needs to be hydrolyzed before it shows reducing property? A. Glucose B. Maltose C. Sucrose D. Fructose Correct Answer: Option C C. Sucrose
Read MoreWhich of the following is correct about both compounds show below? CH3CH 2CH2OH; CH3CH 2CH(OH)CH3
Which of the following is correct about both compounds show below? CH3CH 2CH2OH; CH3CH 2CH(OH)CH3 A. They have identical physical properties B. They are structural isomers C. Their general molecular formula is the same D. They...
Read MoreC8H18 will undergo the following reactions except?
C8H18 will undergo the following reactions except? A. cracking B. combustion C. substitution D. addition Correct Answer: Option D D. addition
Read MoreWhich of the following procedures is suitable for identifying the food colouring added to a pastry sample?
Which of the following procedures is suitable for identifying the food colouring added to a pastry sample? A. The cathode becomes coated with copper B. Both electrodes gain electrons C. The blue colour of the solution fades...
Read MoreWhat is the effect of using vanadium (V) oxide as a catalyst in the reaction represented by the following equation?
What is the effect of using vanadium (V) oxide as a catalyst in the reaction represented by the following equation? 2SO2 + O2 ⇌ 2SO3; ∆H = – xKJmol-1 A. Decreases the value of ∆H B. Increases the collision rate of reactant...
Read MoreWhich of the following occurs when a solution of CuSO4 is electrolyzed using copper electrodes?
Which of the following occurs when a solution of CuSO4 is electrolyzed using copper electrodes? A. The cathode becomes coated with copper B. Both electrodes gain electrons C. The blue colour of the solution fades gradually D....
Read More0.10 mol dm-³ NaCI conducts electricity better than 0.10 mol dm-³ CH3COOH because the solution of NaCI?
0.10 mol dm-³ NaCI conducts electricity better than 0.10 mol dm-³ CH3COOH because the solution of NaCI? A. contains more ions B. is neutral to litmus C. has a lower molar mass D. has a higher pH Correct Answer: Option A A....
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