Ammonia gas spreads out faster than hydrogen chloride, showing that it is:
2. Question | Chemistry
The monomer used to make poly (propene) is called:
3. Question | Biology
All of the following are organelles EXCEPT for:
4. Question | Physics
Which one of these statements is true for ALL electromagnetic waves?
5. Question | Biology
In pea plant size, tall is dominant to dwarf.You cannot tell whether a tall plant is homozygous
(TT) or heterozygous (Tt).To find its genotype you perform a test cross.This involves:
6. Question | Mathematics
Three lights flash at intervals of 4, 6 and 10
seconds respectively. They are started
together. How soon after will they next flash
together again?
7. Question | Social Studies
The introduction of machines in agriculture results in the unemployment or farm workers.
The type of unemployment these workers suffer is
8. Question | Biology
Crossing two brown mice produced an offspring with a black coat.Which of the following statements MUST be correct?
Ⅰ Brown coat is dominant to black.
Ⅱ The brown mice were heterozygous for coat colour.
Ⅲ The black mouse was homozygous for coat colour.
Ⅳ Crossing a black mouse with another black mouse could produce a brown offspring.
9. Question | Biology
Decomposers are important in the process of decay because:
10. Question | Biology
75 g of freshly dug soil was placed in an oven at 105 ℃ for 24 hours. It was allowed to cool, then reweighed. If the final mass of the dry soil was 66 g, what was the % water content of the original soil sample?
11. Question | Mathematics
The number 0.0417 in standard form is
12. Question | Chemistry
The sharp-tasting compound in vinegar is:
13. Question | Information Technology
__________ is a type of chip from which data can be erased by exposure to ultraviolet light.
14. Question | Physics
A loudspeaker emits a steady note.A girl sings a note which is of lower pitch but higher volume.
The sound wave she is producing has:
15. Question | Social Studies
Which of the following would play an important part in a government′s efforts to increase consumption of locally produced food?
16. Question | Chemistry
The number of electrons shared in a single covalent bond is:
17. Question | Information Technology
__________ refers to the number of bits that a microprocessor can manipulate at one time
18. Question | Mathematics
8x - 4(x - 5) =
19. Question | Principles Of Accounts
A trader received an invoice for $4,000 less 25% trade discount. Subsequently he returned one eighth of the goods. What amount would be entered in his Returns Outwards Account?
20. Question | Mathematics
If US$1.00 is equivalent to J$120.00, how
much in US$ would one get for J$9600?