Questions by anonymous

0 votes

1 answer

The diagram below shows the behaviour of mercury in a capillary tube. Explain this observation

asked Aug 6, 2021 in Physics Form 1

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1 answer

A body weighs 600N on the surface of the earth and 450N on the surface of another planet. Calculate the value of g in that planet (g on the earth = 10 N/Kg)

asked Aug 6, 2021 in Physics Form 1

0 votes

1 answer

A small drop of oil has a volume of 5 x 10-8m3. When it is put on a surface of some clean water, it forms a circular film of 0.1m2 in area.

asked Aug 6, 2021 in Physics Form 1

0 votes

1 answer

The figure below shows the change in volume of water in a measuring cylinder when an irregular solid is immersed in it.

asked Aug 6, 2021 in Physics Form 1

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2 answers

Draw a vernier caliper scale to show a reading of 3.36cm

asked Aug 6, 2021 in Physics Form 1

0 votes

1 answer

A Magnesium ribbon was cleaned with steel wool and used in the following set up. Wet sand was heated before Magnesium ribbon.

asked Aug 6, 2021 in Chemistry Form 1

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1 answer

Hydrated Copper (II) Sulphate is heated in a boiling tube as shown.

asked Aug 6, 2021 in Chemistry Form 1

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1 answer

Balance the following chemical equations

asked Aug 6, 2021 in Chemistry Form 2

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1 answer

Define the following terms as used in medicine: Drug

asked Aug 6, 2021 in Chemistry Form 1

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1 answer

Under what conditions does the Bunsen burner produce the luminous flame?

asked Aug 5, 2021 in Chemistry Form 1

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1 answer

A non-luminous flame is preferred for heating. Explain

asked Aug 5, 2021 in Chemistry Form 1

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1 answer

The following diagram represents a non-luminous flame of the Bunsen burner

asked Aug 5, 2021 in Chemistry Form 1

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1 answer

Two elements M and N have atomic numbers 17 and 20 respectively. Write the formula of the compound formed when M and N react.

asked Aug 5, 2021 in Chemistry Form 2

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1 answer

The table below shows the atomic numbers of four elements W,X,Y and Z

asked Aug 5, 2021 in Chemistry Form 2

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2 answers

Elements X and Y have atomic numbers 11 and 17 respectively. Which one of the elements is a metal? Give a reason for your answer.

asked Aug 5, 2021 in Chemistry Form 2

0 votes

1 answer

An element B consists of three isotopes of mass, 28, 29 and 30 and percentage abundances of 92.2, 4.7 and 3.1 respectively. Show that the relative atomic mass of element is 28.11

asked Aug 5, 2021 in Chemistry Form 2

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1 answer

An element, A, has 30 protons and 35 neutrons. What is

asked Aug 5, 2021 in Chemistry Form 2

0 votes

1 answer

Element X has two isotopes. Two thirds of 3316X and one-third 3016X. What is the relative mass of element X?

asked Aug 5, 2021 in Chemistry Form 1

0 votes

1 answer

Give an industrial application of sublimation

asked Aug 5, 2021 in Chemistry Form 1

0 votes

3 answers

Name two other substances that behave as dry ice

asked Aug 5, 2021 in Chemistry Form 2

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