In which order are the following salts sensitive to light?

• A. Agl > AgCl > AgBr
• B. AgCl > Agl > AgBr
• C. AgBr > AgCl > Agl
• D. AgCl > AgBr > Agl

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

Tetraoxosulphate (VI) ions are final test using

• A) acidified silver nitrate
• B) acidified barium chloride
• C) lime water
• D) dilute hydrochloric acid

Which of the following have saturated isomer?

• A) methane and ethane
• B) methane and propane
• C) ethane and propane
• D) butane and pentane

A substance is said to be impure if

• A. its melting point range is wide
• B. it dissolves in water with difficult
• C. it has a low melting point
• D. it is coloured

The bond formed when two electrons that are shared between two atoms are donated by only one of the atoms is

• A. covalent
• B. dative
• C. ionic
• D. metalic

The gas that is most useful in protecting humans against solar radiation is

• A) chlorine
• B) ozone
• C) carbon (IV) oxide
• D) hydrogen sulphide

Consider the reaction represented by the following equation: xCH₃OH + yO₂ → 2CO₂ + zH₂O. The values of x,y and z respectively, are

• A. 2,3 and 4
• B. 2, 4 and 3
• C. 1,2 and 3
• D. 1, 3 and 5

Which of the following halogens is the most reactive?

• A) F₂
• B) Br₂
• C) Cl₂
• D) I₂

An element Z has a combining power of 3. Which of the following formulae is correct of its compounds?

• A. ZSO₃
• B. Z₃CI₂
• C. Z₂O₃
• D. ZS₃