Recent questions without a selected answer

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1 answer

In another experiment a gas jar containing ammonia was inverted over a burning splint. What observation would be made?

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

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A man standing at the middle of two parallel walls fires a gun. He hears an echo after 1.5 seconds. Determine the distance of separation of the walls.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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The diagram below shows a set-up that can be used to obtain nitrogen gas in an experiment.

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

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Polarization and local action are the common defects in a simple cell. How are these defects minimized in the cell?

asked Aug 18, 2021 in Physics Form 1 by anonymous

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State with a reason which type of reflector would be preferred for:

asked Aug 18, 2021 in Physics Form 2 by anonymous

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What is the ‘direction of the magnetic field’ at a point in the field?

asked Aug 18, 2021 in Physics Form 2 by anonymous

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A girl stands 2m in front of a plane mirror, the mirror is then moved 0.6m away from the girl. Determine the distance from the first position of the image to the second position of the image.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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The following is a decay series of Uranium 238.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Using the band theory, differentiate between conductor and a semi-conductor .

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Diagram (a) below shows the position of the bright spot on the screen of a C.R.O when there is no signal on both Y and X- plate. Indicate on the diagram(b) when the Y-plate is connected to a.c signal and for (c) the X- plate is connected to a d.c signal i.e. the display on the screen.

asked Aug 18, 2021 in Physics Form 2 by anonymous

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The grid below shows part of the table. The letter is not the actual chemical symbols of the elements. Study it and use it to answer the question that follows.

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

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The figure below shows a circuit diagram for a photocell.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The diagram below shows an electrical appliance connected to the mains.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Differentiate between nuclear fission and nuclear fusion as used in the study of physics.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Nitrogen gas is used as an inert atmosphere in electric lamps. Explain in terms of structure and bonding why nitrogen gas is so stable .

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

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A student used the setup below to prepare oxygen gas in the laboratory. Study it and answer the questions that follow.

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

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The diagram below represents the extraction of sulphur by Frasch process

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

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1 answer

A stone of mass 4.0kg immersed in water and suspended from a spring balance with a string. The beaker was placed on a compression balance whose reading was 85N. The density of the stone was 3000kg/m-3while the density of the liquid was 800kg/m-3. Determine the;

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Dilute hydrochloric acid was added to a compound Z of sodium. The solid reacted with the acid to form a colorless solution H and a colourless gas K which formed a white precipitate when bubbled through lime water. Write the formula of:

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

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The diagram below shows a pulley system, a mass of 10kg is raised 2m by an effort of 80N.

asked Aug 18, 2021 in Physics Form 1 by anonymous

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