2008
The most efficient absorber of ultraviolet radiation in the atmosphere is
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2008 NECO SSCE Chemistry Past Questions
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2008
Chlorine atom forms Cl- by
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2008
Which of the following laws is obeyed If at constant temperature, 200cm of hydrogen at 1.5 × 10m5Nm-2pressure becomes 300cm3 at 1.0 × 105Nm-2 pressure?
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2008
The type of reaction ethyne mainly undergoes is
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2008
Which of the following is a component of the car exhaust?
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2008
Which of the following will Increase the rate of reaction of Chips of a metal M as shown in the equation below?M(s)+2HC1(aq) → MCI2 (aq) + H2(g)
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2008
What is the colour of phenolphthalein indicator in a basic medium?
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2008
\(^{234}_{90}Th → ^{234}_{91}Pa + X\)In the nuclear reaction above, X is
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2008
When dust particles collide randomly in a beam of Sunlight, the phenomenon observed is known as
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2008
The planet with the highest number of moon is
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2008
Pipe-borne water is usually chlorinated in order to
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2008
The rate of a chemical reaction is NOT affected by one of these factors
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2008
The molecular formula of ethylbutanoate is
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2008
A solution is prepared by dissolving I .96g of H2SO4 in 250 cm3 of its solution. What is the concentration in moles per dm3?
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2008
The action of zinc on an acid produces
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2008
What type of bond holds hydrogen fluoride molecules together when forming larger aggregate?
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2008
A device used in the laboratory for intermittent production of gases without heating is
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2008
Bauxite is the ore of
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2008
Matter is neither created nor destroyed in the course of any chemical reactions is a statement of the law of
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2008
pH is define as
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