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Swali 1 Ripoti
When air is passed through alkaline pyrogallol and then lime water, the gases left are
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Swali 2 Ripoti
The empirical formula of a hydrocarbon containing 0.12 mole of carbon 0.3 mole of hydrogen is
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Swali 5 Ripoti
In the electrolysis of dilute tetraoxosulphate (VI) acid using platinum electrodes, the products obtained at the anode are cathode respectively are
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Swali 6 Ripoti
\( ^{235}_{92}U + ^1_0n → ^{145}_{56}Ba + ^{88}_{36}Kr + 3^1_0n + Energy \)
The equation above represent a/an
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Swali 8 Ripoti
How many atoms of chlorine are required to saturate the double bonds of a compound containing a triene?
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Swali 11 Ripoti
If the volume of a gas at 35°C is 60cm3, what would be its volume in cm3 at 273k?
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Swali 12 Ripoti
Brain tumors can be located by using an isotope of
Swali 13 Ripoti
Which of the following compounds will undergo thermal dissociation?
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Swali 15 Ripoti
What volume of carbon (IV) oxide in dm 3 is produced at s.t.p. when 2.50g of CaCO3 reacts with excess acid according to the following equation? CaCO3(s) + 2HCI(aq) → CaCl2(aq) + H2O(1) + CO2(g)
[CaCO2 100; molar volume of a gas at s.t.p. = 22.4dm 3]
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Swali 19 Ripoti
The scientist who discovered the zig-zag movement of gas molecules is
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Swali 21 Ripoti
Which of the following gases is absorbed from the air dun photosynthesis?
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Swali 24 Ripoti
Compound with the general formula CnH\(_{2n+2}\) belong to the_______ group
Swali 25 Ripoti
What mass of copper in gram would be deposited by a current of 1.00ampere passing for 965 seconds through copper(II) tertraoxosulphate (VI) solution? [Cu 63.5; If = 96500c]
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Swali 26 Ripoti
A colourless gas with characteristics odour which dissolves in water to form an alkaline solution is
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Swali 27 Ripoti
Which of the following statements is NOT correct of group VII elements? They
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Swali 28 Ripoti
The percentage composition of a hydrocarbon is 79.2 carbon 20.8 hydrogen. Calculate its empirical formula [H = 1, C = 12]
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Swali 30 Ripoti
The process involved in the decomposition of sugar by an enzyme is called
Swali 32 Ripoti
During the extraction of iron in the blast furnance, slag is produced using
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Swali 34 Ripoti
The reaction of an alkanol with alkanioc acid is known as
Swali 35 Ripoti
The relationship between equilibrium constant and free energy change is represented as
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Swali 36 Ripoti
The following compounds decolorize acidified potassium tetraoxomanganate (VII) solution EXCEPT
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Swali 37 Ripoti
The green house effect is a climatic condition associated with the presence of excess
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Swali 38 Ripoti
The rate of a reaction usually increases with increase in the concentration of reactants because the
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Swali 43 Ripoti
Which of the following salt solutions will have a pH greater than 7?
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Swali 44 Ripoti
Which of the following non-metals reacts most readily with metals?
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Swali 45 Ripoti
C\(_6\)H\(_{12}\)O\(_6\)
What is the molar mass of the compound above?
[ H=1, C=12, O=16 }
Swali 47 Ripoti
Two elements X and Y with electronic configurations 2,8,2 and 2,8,7 respectively, are likely to combine by _________bonding
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Je, ungependa kuendelea na hatua hii?