Chemistry

Which of the following is not correct of glucose and fructose? They

A. are structural isomers B. reduce Fehling's solution C. can be obtained by the hydrolysis of starch D. are readily…

5 years ago

Which of the following statements explains why tetraoxosulphate (IV) acid is regarded as a strong acid?

A. Tetraoxosulphate (IV) acid is dibasic B. the acid is concentrated C. the acid is completely ionized in aqueous solution…

5 years ago

How many moles of AgNO3 are there in 500cm³ of 0.01M AgNO3 solution?

A. 0.005 mole B. 0.05 mole C. 0.5 mole D. 5 moles E. 1 mole Correct Answer: Option A -…

5 years ago

The following alloys contain copper except?

A. magnalium B. duralumn C. bronze D. brass E. type metal Correct Answer: Option A - magnalium

5 years ago

The oxidation number of sulphur changes from?

In the reaction represented by the equation; 2FeCl3 + SO2 + 2H2O → 2FeCl2 + H2SO4 + 2HCl the oxidation…

5 years ago

Which of the following pollutants is biodegradable ________?

A. Sewage B. Plastics C. Metal scrape D. Lead compounds E. Hydrogen sulphide Correct Answer: Option A - Sewage

5 years ago

What would be the formula of the compound?

MO and X 2O represent the formula of oxides of elements M and X respectively. If M and X should…

5 years ago

What is the molecular formula of a compound whose empirical formula is CH2O and molar mass is 180? (H = 1, C = 12, O = 16)

A. C4H8O2 B. C4H8O3 C. C6H10O5 D. C6H12O6 E. C12H22O11 Correct Answer: Option D - C6H12O6

5 years ago

The compound of copper which is used in electroplating dyeing, printing, wood preservation and as a fungicide is?

A. copper (ll) hydroxide B. copper (ll) trioxonitrate (V) pentahydrate C. copper (ll) tetraoxosulphate (VI) pentahydrate D. copper (ll) oxide…

5 years ago

Which of the following salts in aqueous solution will have a pH greater than 7?

A. NaCl B. ACI3 C. FeCI3 D. Na2SO4 E. K2CO3 Correct Answer: Option E - K2CO3

5 years ago