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Fuels and energy questions

Fuels and energy questions | form two Chemistry

Find Fuels and energy examination questions, form two Chemistry in acaproso.com

# Question
1

(i) Why petroleum and coal are non-renewable sources of energy?
(ii) Give three alternatives to non-renewable sources of energy.


Short answers
2

Give three examples in each of the following:
(i)Solid fuel
(ii)Gaseous fuel.


Short answers
3

Briefly explain why:

  1. the use of charcoal is harmful to the environment.
  2. charcoal is still being used by majority of Tanznaians for domestic purposes.

Long answers
4

A mass of 20.0 g of petrol was burnt in air. The heat produced was used to heat 2.5 litres of  water. Given that the heat value of petrol is 43,640 kJ/kg, by how much the temperature of water could have changed? (The specific heat capacity of water = 4.18 kJ kg​-1 K-1​ , Density of water = 1000 kg/m​3​ ).


Mathematical Calculation
5

Briefly explain five characteristics to be considered when looking for a good fuel.


Long answers
6
  1. Write four sources of energy used for cooking in most Tanzanian societies.
  2. List four characteristics of a good fuel.

Short answers
7

A type of gas fuel derived from decomposing biological waste is called ____.


Fill in blanks
8

Which of the following can be classified as a renewable source of energy?
A. Biomass
B. Coal
C. Coke
D. Petroleum


Multiple choices
9

(a) Which ways are the fossil fuels detrimental to the environment? Give four points.
(b) Briefly explain how biogas is produced by using domestic waste.


Short answers
10

Consider the following fuels which are used for different purposes:
1. Coal
2. Fire wood
3. Petrol
4. Charcoal.
Which fuels originate from fossils?

  1. 1 and 3
  2. 1 and 4
  3. 2 and 4
  4. 2 and 3
  5. 1 and 2

Multiple choices