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The diagram below shows the catalytic oxidation of ammonia gas. Use it to answer the questions that follow:-
(a) What metal could rod M be made of?
(b) State and explain two observations made inside the conical flask
Date posted:
October 22, 2019
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A hydrocarbon compound Z decolourizes bromine liquid in the presence of light but does not decolourize acidified potassium manganate (VII). Name and draw the structural formula of the eighth member of this homologous series
Date posted:
October 22, 2019
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Write down all the isomers of but-z-ene and give their IUPAC names
Date posted:
October 22, 2019
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(i) 2.63g of a solution of sodium chloride at 20.0oC was reacted with silver nitrate. After filtration,washing and drying, 2.36g of silver chloride was obtained. Determine the solubility of sodium
chloride at 20.0oC . (Na=23, Cl= 35.5, Ag = 108)
(ii) Determine the number of moles of carbon (IV) Oxide gas produced when sodium carbonate reacted with dilute sulphuric (VI) acid (Molar gas volume =24dm3)
Date posted:
October 22, 2019
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Substance “M” with a general formula C2Hy burnt in chlorine gas with a red flame producing a cloud of black specks and colourless gas G.
(a) State the collective name for compounds which ‘M’ belongs
(b) With reason, state the identity of the black specks and colour gas “G”.
Date posted:
October 22, 2019
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Study the data given in the following table and answer the questions that follow. The letters are not the actual symbols of elements.
(i) State and explain the trend in melting point in A B C
(ii) Explain why the melting point and boiling points of element D is the highest
(iii) Explain why the element represented by letter E has two melting point values
(iv) Write down the chemical formula between element C and sulphate ions
(v) Name the chemical family in which H belong and state one use of the element
(vi) What is the nature of the oxide of the elements represented by letters C and F?
Date posted:
October 22, 2019
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Give the systematic names of the following compounds;
Date posted:
October 22, 2019
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Study the scheme below and answer the questions that follow:
Name the reagents in
Step I
Step II
Step IV
(ii) Write an equation for the complete combustion of 
(iii) Give two uses of CH4
Date posted:
October 22, 2019
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Ethene is used in making polyethene bag in a process called polymerization
(i) Name the type of polymer that is formed when ethane polymerise
(ii) Describe a simple chemical test that can be used to identify ethane gas in the laboratory
Date posted:
October 22, 2019
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Name the following compounds:(CH3)3 C CH2 CH2 CH3
Date posted:
October 22, 2019
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Give two ways how the disposal of polymers such as polychloroethene by burning pollutes the environment
Date posted:
October 22, 2019
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State the observations made when buton-l-ol reacts with:-
(i) Acidified potassium dichromate (VI) solution
(ii) Potassium metal
Date posted:
October 22, 2019
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Give the systematic names of the following compounds:-
Date posted:
October 22, 2019
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Use the diagram below to answer the questions that follow:
(i) Name another source of hydrogen apart from electrolysis of water
(ii) What conditions are necessary for step III to occur?
(iii) Write the equation for the formation of colourless gas Q
Date posted:
October 22, 2019
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A thermometer reads 95.45 degree Celsius and the static correction given in the correction curve is is -0.08 degree Celsius.Determine the true value of the temperature.
Date posted:
October 21, 2019
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On a 250 volts supply a fault having a resistance of 20 ohms develops between the unearthed end of the winding of an electric heater and the frame.If the resistance of the substation earth electrode is 4 ohms,that of human body 2000 ohms and the safe maximum current through the body is 0.025 Amperes,what is the safe maximum resistance of consumers earth electrode?
Date posted:
October 21, 2019
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Power is usually generated at high voltages at the generating company then is stepped down to low voltage for transmission. State a reason for this.
Date posted:
October 21, 2019
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State any two common faults found in ceramic capacitor.
Date posted:
October 21, 2019
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The following is an extract of a cashbook.
Determine the figures represented by W, X, Y and Z.
Date posted:
October 21, 2019
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The following information relates to Benja Retail Shop as at 31st December, 2006.
Shs.
Opening stock 80,000
Closing stock 100,000
Sales 325,000
Rate of stock turnover 3 times
Calculate:
(i)the cost of goods sold.
(ii)the gross profit.
Date posted:
October 21, 2019
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Nzundu and Theku bought a building for Kshs.12,000,000. Nzundu paid Kshs.8,000,000 while Theku paid Kshs.4,000,000. The building was insured for 8,000,000 against the risk of fire. Later the building was partially destroyed by fire to a tune of Kshs.6,000,000.
(a) State the amount of compensation likely to be paid by the insurance company.
(b)Calculate the amount of compensation that each one will receive based on their
capital contributions.
Date posted:
October 21, 2019
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Post the following transactions to the relevant “T” accounts.
(a)Started a business by depositing in the bank a cheque of Shs.10,000
on 2nd January 2011.
(b)Withdrew cash Shs.2000 from the bank for business use on 5th January 2011.
(c)Ngithi a debtor paid Shs.4000 in cash on 10th January 2011.
(d)Withdrew cash Sh.1,000 from the business for personal use on 16th January 2011.
Date posted:
October 21, 2019
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Name the President of the Supreme Court in Kenya.
Date posted:
October 21, 2019
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(a)Donnez deux details sur le petit garcon.
(i)………………………………
(ii)……………………………
(b)Qui doit se presenter et où?
(i)……………………………
(ii)…………………………
Date posted:
October 21, 2019
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Fill in the blank spaces, with the most appropriate word.
Poaching is increasingly (1) _______a menace, not just in Kenya,
(2) _____ also in other parts of the continent, (3) _______ a grave
danger to the survival of various animals species, particularly the elephant. Whereas
there have been (4) ________to raise awareness about the danger posed by
the menace, not enough has been done to (5) _____it out and punish offenders.
As it is, poaching is becoming a crisis, threatening species like elephants, which are
hunted (6) ________their ivory, rhinos which are targeted because of their
horns and other game like lions.
The Kenya Wildlife Service has been doing well to combat (7) _______________ but
it appears that more is needed if the criminals (8) _________________ to be stopped.
If the killers have more sophisticated weaponry, then KWS must (9) _______________
its game or call (10) _______________ the military to assist.
Date posted:
October 21, 2019
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Eleza maana ya istilahi zifuatazo za isimu jamii.
i)Lugha ya taifa
(ii)Lugha ya ishara
(iii)Lugha mwiko
(iv)Sajili za lugha
(v)Uchanganyaji msimbo.
Date posted:
October 21, 2019
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ISIMU JAMII
Ali: Wee kuja hapa. Wewe ni nani? Sema haraka!
Ebo: Mimi … ni … afande ni Ebo
Ali: Unatoka wapi sa ii? Hapa hakuna sheria?
Ebo: Samahani mkubwa. Mimi niku…
Ali: Mkubwa wa nani? Wakubwa wako ofisini.
Ebo: Pole mzee.
Ali: Mzee gani? Hii mtu lazima niiwekwa store. Yaani self-contained.
Toa viatu.
Ebo: Tafadhali Bwana Askari, nilichelewa …
Ali: Mimi sitaki hadithi! Hizo pelekea nyanya yako, eh. Fanya haraka!
Ebo: Naomba mkubwa …
Ali: Hapa si kanisani. Unaomba! Hata …
Fafanua sifa tano za sajili hii.
Date posted:
October 21, 2019
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Eleza maana ya nomino.
Date posted:
October 21, 2019
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Eleza maana tatu zinazopatikana katika sentensi hii.
Alikuwa amenijuza kuwa angefika kwao.
Date posted:
October 21, 2019
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Eleza matumizi ya kwa katika sentensi hii.
Kwa nini umeishi kwao kwa miaka mingi?
Date posted:
October 21, 2019