The reaction of sucrose with dilute HCI produces

• A. an alkanoate
• B. glucose and fructose
• C. a black mass of carbon
• D. a polysaccharide

How many moles of copper would be deposited by passing 1 Faraday of electricity through a CuCl₂ solution?

• A. 2 moles
• B. 0.5moles
• C. 0.025moles
• D. 1 mole

The murmurings of the congregation in the wilderness against Moses and Aaron were an indication of the people's

• A. lack of patience with them
• B. lack of fath in them
• C. fear of dying by the sword
• D. inability to get to the promise land

The oxidation number of phosphorus in PO₄^3- is

• A. + 1
• B. +2
• C. +3
• D. +5

What is the most probable group of an element which is a soft, silvery white solid and reacts violently with water?

• A. Group 0
• B. Group 1
• C. Group 4
• D. Group 6

Which of the following oxides of nitrogen has oxidation number of + 1?

• A. KNO3
• B. N2O
• C. N2O3
• D. NO

Which of the following can be used to predict the type of bonding in HCI?

• A. pH value
• B. Electronegativity difference
• C. Heat of neutralization
• D. Heat of solution

Which of the following compounds will impart a brick-red colour to a non-luminious bunsen flame?

• A. NaCl
• B. LiCl
• C. CaCl₂
• D. MgCl₂

A WEAK ACID IS ONE WHICH

• A. IS NOT CORROSIVE
• B. IS SLIGHTLY IONIZIED IN WATER
• C. DOES NOT PRODUCE SALTS WITH ALKALIS
• D. DOES NOT CONDUCT AN ELECTRIC CURRENT IN AQUEOUS SOLUTION

0.10 mol dm^-3 NaCI conducts electricity better than 0.10 mol dm^-3CH₃COOH 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