1. (A) (I) WHAT IS A TRANSISTOR?
(II) EXPLAIN HOW A TRANSISTOR behaves AS A SWITCH.

(B) (I) EXPLAIN THE TERM POULTRY.
(II) STATE FOUR REASONS FOR KEEPING POULTRY.

(C) EXPLAIN THE FOLLOWING TERMS:
(I) POPULATION;
(II) SPECIES.

(D) (I) WHAT ARE X-RAYS?
(II) STATE TWO DANGERS ASSOCIATED WITH OVER EXPOSURE TO X-RAYS.

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2. (A) (I) WHAT IS PLANT TISSUE CULTURE?
(II) STATE THREE ADVANTAGES OF PROPAGATING A PLANT BY TISSUE CULTURE.

(B) (I) EXPLAIN THE TERM PARTURITION AS APPLIED TO ANIMAL PRODUCTION.
(II) STATE THREE SIGNS SHOWN BY AN ANIMAL WHEN PARTURITION IS ABOUT TO OCCUR.

(C) DRAW AND LABEL A RAY DIAGRAM TO SHOW HOW THE IMAGE OF A POINT OBJECT IS SEEN IN A PLANE MIRROR

(D) A PIECE OF ZINC METAL WAS PLACED IN A BEAKER CONTAINING DILUTE HYDROCHLORIC ACID.
(I) WRITE A BALANCED CHEMICAL EQUATION FOR THE REACTION THAT TOOK PLACE.

(II) IF 10.4G OF ZINC WAS PLACED IN THE HYDROCHLORIC ACID, DETERMINE THE AMOUNT, IN MOLES OF HYDROCHLORIC ACID, THAT WOULD BE REQUIRED TO REACT WITH THE ZINC COMPLETELY. [ZN = 65.4, H = 1, CL = 35.5]

Disturbing reasons why your SSNIT pension will be “small” and what to do

3. (A) EXPLAIN THE FOLLOWING TERMS AS APPLIED TO SOUND WAVES:
(I) FREQUENCY;
(II) LOUDNESS;
(III) PITCH.

(B) (I) WHAT IS CROP ROTATION?
(II) STATE TWO ADVANTAGES OF CROP ROTATION.

(C) (I) LIST THREE KINGDOMS USED IN THE CLASSIFICATION
OF LIVING THINGS.
(II) STATE TWO REASONS FOR CLASSIFICATION OF LIVING THINGS.

(D) (I) EXPLAIN BRIEFLY HOW EACH OF THE FOLLOWING PROCESSES OCCURS:
(I) MELTING OF A SOLID;
(II) CONDENSATION OF A GAS.