Zn + 2HCL → ZnCl\(_2\) + H\(_2\) What happens to zinc in the above reaction?
oxidized
a reactant
reduced
a metal
Correct answer is A
-Zn is a reducing agent, HCl is an oxidizing agent.
-the zinc is oxidized
Low temperature and high pressure
Low temperature and low pressure
high temperature and low pressure
high temperature and high pressure
Correct answer is D
high temperature and high pressure favor the highest yield for N\(_2\)O\(_4\)
high temperature favours the production of the reactant since it is endothermic, while high pressure favours the side involving a decrease in volume.
An organic compound with fishy smell is likely to have a general formula?
RCONHR\(^1\)
RCONH\(_2\)
RNH\(_2\)
RCOR\(^1\)
Correct answer is C
Amines possess a characteristic ammonia smell, liquid amines have a distinctive "fishy" and foul smell.
-Amine. R-NH2
Using the metal activity series, the metal that can liberate hydrogen gas from steam is?
iron
copper
tin
lead
Correct answer is A
Iron reacts with steam to form iron oxide and hydrogen gas.
Addition of charcoal to the filter bed of sand during water treatment for township supply is to?
prevent goiter
prevent tooth decay
remove odour
kill germs
Correct answer is C
Activated Carbon filters are excellent at removing chlorine and related poor taste and odor.