One of the functions of a trade association is to

• A. pay members salaries
• B. promote members' welfare
• C. provide loans to members
• D. provide employment for members

Modem computers Compared to earlier computers are ?

• A. less reliable
• B. faster and larger
• C. larger and stronger
• D. faster and smaller

A slope is said to be even when the contours are

• A. concentric
• B. irregularly spaced
• C. closely spaced
• D. equally placed

in the event of bankruptcy owners of joint-stock companies lose?

• A. their private properties
• B. both company and private properties
• C. only the capital invested
• D. only their dividends

An elements X with relative atomic mass 16.2 contains two isotopes¹⁶₈X with relative abundance of 90% and m8X with relative abundance of 10%. The value of m is

• A. 16
• B. 18
• C. 12
• D. 14

The vector for yellow fever is?

• A. Aedes mosquito
• B. Anopheles mosquito
• C. tsetse fly
• D. blackfly

Examples of organisms in which extracellular digestion occurs are

• A. fungus, loranthus and housefly
• B. rhizopus, sponges and earthworm
• C. roundworm, tapeworm and hydra
• D. rhizopus, housefly and hydra

Octane number is highest in petrol containing a high proportion of

• A. heptane
• B. octane
• C. 2-methylpentane
• E. 2,2,4-trimethylpentane

Humidity is used to describe the amount of

• A. air in water vapour
• B. cloud available in the atmosphere
• C. air in equal volume of cloud
• D. water vapour in the amosphere

A 15kg mass, suspended from a ceiling, is pulled aside with a horizontal force, F, as shown in the diagram below. Calculate the value of the tension, T. (g = 10ms^-2)

• A. 300.0N
• B. 173.2N
• C. 30.0N
• D. 17.3N