Evaluateⁿ⁺¹C_n-2 If n =15

• A. 3630
• B. 3360
• C. 1120
• D. 560

Which of the following diseases is caused by deficiency of insulin in the body?

• A. Malaria
• B.Diabetes mellitus
• C. Hepatitis
• D. Gonorrhoea

Metal salts of long chain fatty acids are known as

• A) detergents
• B) double salts
• C) soaps
• D) grease

A block and tackle is used to raise a load of 250N through a vertical distance of 30m. What is the efficiency of the system if the work done against friction is 1500J?

• A. 62.5%
• B. 73.3%
• C. 83.3%
• D. 94.3%

The products of the electrolysis of dilute sodium chloride solution with platinum electrodes are

• A) hydrogen and oxygen
• B) oxygen and chlorine
• C) chlorine and water
• D) sodium amalgam and chlorine

The mean age of a group of students is 15 years. When the age of a teacher, 45 years old, is added to the age of the students, the mean of their ages becomes 18 years. Find the number of the students in the group

• A. 9
• B. 7
• C. 42
• D. 15

In the diagram below showing the digestive tract of a certain farm animal, the digestion of protein starts in the part labelled

• A. I
• B. II
• C. III
• D. IV

Josiah's immediate reaction to the words of Huldah the prophetess was

• A. ordering the immediate repair of the temple
• B. payment of the salary arrears to temple workers
• C. restoration of his allegiance to the convenant
• D. reading of the book of the law

Choose a word which has the same or nearly the same meaning as the first word. Permanent:

• A. temporary
• B. old
• C. lasting
• D. complete

Which of the following statements is/are true?

• A. H₂SO₄ is a strong electrolyte.
• B. CH₃COO H is a weak electrolyte
• C. C₆H₁₂O₆ is a non electrolyte
• D. All of the above