The value of 5 in the number 357.21 is

The second most common gas in the atmosphere is:

Which one of the following would NOT give rise to a systematic error in an experiment?

Instructions: Choose the one NEAREST in MEANING to the original sentence.

If students' efforts are rewarded they would be encouraged to work harder.

If p * q = pq² , then 2 * 3 =

The graph shows the results of an experiment to investigate
the relationship between the voltage placed across a light bulb
and the current which then flows through it.Which one of the
following statements is NOT true?

The density of pure water is:

A contractor completed five-ninths of a job before a second contractor completed an additional one-third. What fraction of the job is left undone?

Some foods contain flavour enhancers. These food additives:

If a reaction takes 50 seconds at 25 ℃, then at 50 ℃ the time for the reaction in seconds is likely to be about:

The wall of the heart is made of:

The decimal equivalent of ⁷/₈ is

Which one of the following is correct. When we digest our food:

For which of the following purposes is the information collected in a census normally used?

1. To determine the rate of population growth
2. To predict the needs of the society and plan how to satisfy them
3. To estimate the number of government supporters in the country

If x = 2³ × 5² =, then x⁴ =

The halogens are found in:

A shopkeeper buys 48 radios for a wholesale price of $7200. At what price per radio must he sell to make a profit of 15% on his cost?

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:

Which of the following are all deficiency diseases?

All of the following are components of an ecosystem EXCEPT for: