The specific heat capacity of a particular liquid is 3000 J kg^-1 K^-1. A large beaker containing 2 kg of the liquid has to be warmed from 25 ℃ to 35 ℃. A 100 W heater is used. If all the thermal energy could be transferred to the liquid, how long would it take?

If x = 3² × 2³, then x⁴ =

The chemicals that make up the bodies of animals and plants are called:

The density of pure water is:

In the circle above, the circumference is 10 cm. The length of the arc AB, in centimetres, is

A dynamo connected to a circuit is being turned.Which one of the following would NOT generate a greater e.m.f.?

The width of a block of wood with rectangular cross-section is x cm. Its height is ²/₃ its width and its length is 4 times its height. What is its volume in cm³?

Which one of these four statements is NOT true?

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 wall of the heart is made of:

THE ITEM refer to the following dialogue.

Sita: When Marvin was group leader he was always ordering us about.

Paul: Me, I prefer a group leader who allows members to do as they please.

The leadership style of Marvin as described in the dialogue above is.

Vaccination causes a person′s immune system to produce:

Which of the following transactions will NOT affect capital?

The electrical charges on a proton and an electron are:

When something gets hotter, the particles in it gain more:

In an atom the neutron is found:

Eight bits are called a __________.

Hydrocarbons contain carbon and:

The number of particles in a mole of any gas is always:

Which of the following describes real accounts?