Differentiate sin x - x cos x

• A. x cos x
• B. x sin x
• C. -x cos x
• D. -x sin x

The classes of plants the root systems in diagrams I and II above represent respectively are______________

• A. Dicotyledoneae and Monocotyledoneae
• B. Monocotyledoneae and Dicotyledoneae
• C. Dicotyledoneae and Dicotyledoncae
• D. Monocotyledoneae and Monocotyledoneae

Explain five services of each of the following; (a) Courier firms (b) NITEL

Two cards are drawn one after the other with replacement from a well-shuffled ordinary deck of 52 cards containing four Aces. Find the probability that they are both Aces

• A. 1/221
• B. 1/169
• C. 1/52
• D. 1/26

The greatest foreign exchange earner for Nigeria before the advent of petroleum was

• A. mining
• B. handicraft
• C. agriculture
• D. manufacturing

Aliyu bought 100 shares at the stock market through a stockbroker. He was told the price each share was N3 cumulative. This means that Aliyu

• A. is entitled always to a cumulative dividends accruing from the shares
• B. is entitled to the next dividends due to the shares
• C. will not be entitled to the next dividends due to the shares
• D. still owes N3 on the shares which will be subtracted from the dividends

A distinctive feature of the Richards Constitution was its provision for

• A. unofficial members in the Legislative Council
• B. a Legislative Council for the whole of Nigeria
• C. the establishment of local councils
• D. official members in the Legislative Council

Fill the gap with the most appropriate option from the list provided.

He arrived ....... to see his family leave for the countryside?

• A. in time
• B. timely
• C. late
• D. with

Sodium chloride is used in the following processes except in the

• A. treatment of polluted water
• B. preservation of food
• C. separation of soap from glycerol
• D. manufacture of chlorine

The chlorinated alkane often used industrially to remove grease is?

• A. Tetrachloromethane
• B. Chloromethane
• C. Trichloromethane
• D. Dichloromethane