Recent questions without a selected answer

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How does a bimetallic thermostat work?

asked Aug 18, 2021 in Physics Form 1 by amosmulinya

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1 answer

Compare with a reason the atomic radius of sodium to that of aluminium

asked Aug 18, 2021 in Chemistry Form 2 by Abuk

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1 answer

The diagram below shows the set up used by a student to prepare dry sulphur IV oxide gas. Study it carefully and answer the question that follows.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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Distinguish between the bleaching action of sulphur IV oxide and chlorine.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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In a certain x-ray tube, the electrons are accelerated by a pd of 12000V. Assuming all the energy goes to produce x-rays, determine the frequency of the x-rays produced. (Planks constant h = 6.62 ×10-34 J and charge of an electron, e = 1.6 ×10-19 C)

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The flow charts below shows some reaction starting with zinc nitrate. Study it and answer the question that follows.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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What property of lead makes it suitable for use as shielding material?

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Figure 4 shows the features of an x-rays tube.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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2 answers

X-rays are used for detecting cracks inside metal beams.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The set up below was used to investigate the burning of a candle study it and answer the questions that follow.

asked Aug 18, 2021 in Chemistry Form 2 by anony mous

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The function of the capacitor is to eliminate sparking at the contacts. State why sparking occurs at the contacts.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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3 answers

Candle wax is mainly a compound consisting of two elements. Name the two elements.

asked Aug 18, 2021 in Chemistry Form 2 by anony mous

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The figure below shows an induction coil used to step-up voltage.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The figure below shows a section a flexible wire carrying current perpendicularly out of the paper.

asked Aug 18, 2021 in Physics Form 2 by anonymous

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Study the circuit below:

asked Aug 18, 2021 in Physics by anonymous

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give one industrial use for Nitric acid

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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2 answers

Give one industrial use for Ammonia

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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1 answer

Arrange the following electromagnetic waves in order of their increasing wavelength. X-rays, gamma rays, ultra violet, visible light, infrared and microwaves.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The diagram below shows a circuit with a p-n junction and a very low power bulb.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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The scheme below shows various reactions starting with hydrogen and nitrogen .study it carefully and answer the question that follows.

asked Aug 18, 2021 in Chemistry Form 3 by anony mous

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