We do not see an object if rays of light from it are focussed on the blind spot because:

Ammonia gas spreads out faster than hydrogen chloride, showing that it is:

A financial institution needs only to provide the caller with a limited amount of information. A __________ system is ideal to satisfy this need.

The density of seawater is:

The balances listed below appear in a trader's trial balance. The item that is to be included in the Profit and Loss Account is

A business operates its petty cash on the imprest system. At the beginning of the month the petty cashier was given $20.00 out of which she spent $15.20. How much will she be reimbursed?

The table shows the distribution of the ages of 25 students.

What is the probability that a student chosen at random is AT LEAST 13 years old?

The number of atoms in this formula, H₂SO₄, is:

The proportions of elements in a pure compound are always:

In the equation, carbon monoxide + oxygen → carbon dioxide, a reactant is:

Biological catalysts in yeast are called:

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?

When metals react with acids they give a salt and:

The average of a set of numbers reduces from 14 to 11 when the number 35 is removed. How many numbers were in the original set?

g/dm³ are units of:

All of these are alkenes EXCEPT for:

A __________ is a device that is externally connected to and under the control of the central processing unit.

Boiling and evaporation both involve a liquid turning into a vapour (i.e. a gas).The following statements relate to water.Which one is NOT true?

The number of litres in 2000 cm³ is:

Malaria is spread by: