Recent questions without an upvoted answer

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1 answer

Chlorine water was exposed to sunlight for a few hours .Colourless gas F was collected in the boiling tube as shown.

asked Aug 18, 2021 in Chemistry Form 1 by anony mous

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1 answer

The figure below shows a force distance graph for a car being towed on a level ground.

asked Aug 18, 2021 in Physics Form 3 by anonymous

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2 answers

Explain how you would show chemically that a given gas is ammonia.

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

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1 answer

A ball is dropped from the top of a vertical cliff 45m high. Given that the velocity just before striking the sandy beach is 30m/s, and the ball penetrate the sand to a depth of 10cm determine its average retardation.

asked Aug 18, 2021 in Physics Form 3 by anonymous

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1 answer

A sample of air contaminated with carbon monoxide and sulphur dioxide was passed through the apparatus shown in the diagram below.

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

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2 answers

Graphite is a non metal, yet it conduct an electric current .explain this observation.

asked Aug 18, 2021 in Chemistry by anony mous

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1 answer

Water of mass 3kg initially at 20℃ is heated in an electric kettle rated 3.0kW. Thewater is heated until it boils at 100℃. Taking specific heat capacity of water=4200Jkg/K, heat capacity of kettle=450J/kg, specific latent heat of vapourisation of water =2.3MJ/kg, calculate;

asked Aug 18, 2021 in Physics Form 3 by anonymous

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1 answer

The diagram below shoes the bonding between aluminium chloride and ammonia

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

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1 answer

The set up below was used to collect gas Z produced by the reaction between water and calcium metal. set up on water and calcium metal reaction Give a chemical test for gas Z. 2mks Write the equation of the reaction between the calcium metal and water.

asked Aug 18, 2021 in Chemistry Form 1 by anony mous

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1 answer

Explain why it is advisable to use the pressure cooker for cooking at high altitudes.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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1 answer

The figure 4 below shows an object of mass 0.2kg whirled in vertical circle of radius 0.5m at uniform speed of 5m/s.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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1 answer

Distinguish between angular and linear velocity.

asked Aug 18, 2021 in Physics Form 3 by anonymous

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1 answer

What is the gravitational potential energy stored in a spring when stretched through 4cm by a force of 2N

asked Aug 18, 2021 in Physics Form 1 by anonymous

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1 answer

How much current is taken by a bulb whose rate is 100Ω and which is designed for mains supply of 240V?

asked Aug 18, 2021 in Physics Form 4 by anonymous

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1 answer

20cm3 of oxygen diffused through a porous partition in 70s .how long would it take 20cm3. Of sulphur VI oxide to diffuse through the same portion under the same condition.

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

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1 answer

The rate of diffusion of neon was found to be 1.45 times faster than that of an equa! volume of gas X at room temperature. Determine the relative formula mass of gas X (Ne = 20.0).

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

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1 answer

Figure 3 shows a small toy boat floating on water in a basin. X and Y are two points near the toy.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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1 answer

The efficiency of a pulley system is always less than 100%. State two reasons.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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1 answer

A student pulls a block of wood along a horizontal surface by applying a constant force. State the reason why the block moves at a constant.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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1 answer

Name two other gases which could be used to reduce copper II oxide.

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

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