To complete the reaction: acid + carbonate → salt + carbon dioxide + ?, we must add the word:
2. Question | Integrated Science
When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:
3. Question | Chemistry
To make car bodies we use:
4. Question | Chemistry
You never find native magnesium because:
5. Question | Chemistry
If a flask containing marble and acid is placed on a balance, the mass decreases steadily with time, which means that:
6. Question | Information Technology
The system used by mission control in Houston, Texas to monitor the operation of space exploration vehicles is an example of the __________ processing mode.
7. Question | Chemistry
For Mg++ to turn into an atom of magnesium metal it must:
8. Question | Mathematics
Which of the following is a prime number?
9. Question | English A
Instruction: Choose from the four options the word or pair of words which BEST completes the meaning of the sentence.
When parents display a ............ for one child, the others are likely to feel ............
10. Question | Physics
A girl whose weight is 250 N walks up a slope 40 m long onto a platform 3 m high.
Her gain in gravitational potential energy is:
11. Question | Chemistry
All of these materials are used in a blast furnace EXCEPT for:
12. Question | Integrated Science
The workplace should be:
13. Question | Chemistry
When gas particles spread out we call it:
14. Question | Integrated Science
Sea breezes result because:
15. 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?
16. Question | Mathematics
After a 10% discount, an article is sold for
$360. The price before the discount was
17. Question | Mathematics
Items bought by a trader for $80 are sold for $100. The profit expressed as a percentage of cost price is
18. Question | Biology
Which one of the following foods contains the most energy per 100 g?
19. Question | Social Studies
Which of the following BEST characterizes a primary group?
20. Question | Biology
Plants make growth movements in response to all of the following stimuli EXCEPT for: