Loading....
|
Press & Hold to Drag Around |
|||
|
Click Here to Close |
|||
Question 1 Report
When dust particles collide randomly in a beam of Sunlight, the phenomenon observed is known as
Question 2 Report
Which of these arrangement of elements is in order of increasing ionization energy?
Answer Details
Question 4 Report
What type of bond holds hydrogen fluoride molecules together when forming larger aggregate?
Answer Details
Question 5 Report
The rate of a chemical reaction is NOT affected by one of these factors
Answer Details
Question 6 Report
Matter is neither created nor destroyed in the course of any chemical reactions is a statement of the law of
Question 8 Report
The most efficient absorber of ultraviolet radiation in the atmosphere is
Answer Details
Question 9 Report
An element Z has a combining power of 3. Which of the following formulae is correct of its compound?
Answer Details
Question 14 Report
If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is that with the
Answer Details
Question 15 Report
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)
Answer Details
Question 20 Report
A solution is prepared by dissolving I .96g of H2SO4 in 250 cm3 of its solution. What is the concentration in moles per dm3?
Answer Details
Question 21 Report
The reaction of hydrochloric acid and calcium trioxocarbonate (IV) produces
Answer Details
Question 22 Report
When sodium hydroxide solution is added to a solution of zinc salt, the white precipitate formed re-dissolve in excess sodium hydroxide because
Question 23 Report
The type of reaction ethyne mainly undergoes is
Question 24 Report
\( ^{234}_{90}Th → ^{234}_{91}Pa + X \)
In the nuclear reaction above, X is
Answer Details
Question 25 Report
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?
Question 26 Report
What is the maximum number of electrons that an f-orbital can accommodate?
Answer Details
Question 27 Report
In which of the following equations can Le-chartelier’s principle be applied?
Answer Details
Question 28 Report
In which of these groups will all the substances be insoluble in water?
Question 30 Report
During the electrolysis of sodium Chloride solution, hydrogen is discharged at the carbon cathode because
Answer Details
Question 31 Report
A measure of the degree of disorderliness in a chemical system is known as the
Answer Details
Question 32 Report
A device used in the laboratory for intermittent production of gases without heating is
Question 33 Report
If two elements X and Z with electronic configurations 2,8.3 and2,8,6 respectively combine, the compound formed will have the formula
Answer Details
Question 34 Report
The molecular formula of ethylbutanoate is?
Question 36 Report
Chromatography is used to separate components of mixtures which differ in their rates of
Answer Details
Question 37 Report
What is the colour of phenolphthalein indicator in a basic medium?
Question 38 Report
Brownian motion explains
Question 39 Report
Which of the following compounds is unsaturated?
Question 42 Report
The high boiling point of hydrogen fluoride can be explained in terms of?
Answer Details
Would you like to proceed with this action?