Correct Answer: D. lobbying

Explanation

Pressure groups are organisations which seek to influence the policies of the government and this process is known as lobbying.

Correct Answer: C. Ammonium chloride

Correct Answer: B. obtaining loans form banks

Explanation

(a) (i) When water does not easily form lather with soap / when water contains dissolved calcium and magnesium salts.

Water that does not easily lather with soap / Water that contains dissolved calcium and magnesium salts

(ii) Prepare soap solution

Measure volume of sample water from a burette or pipette titratewith shaking to permanent lather.

take titre value sayx cm\(^3\)

Measure same volume of boiled sample water and then titrate with shaking take titre value say y cm\(^3\)

Find ratio; \(\frac{\text{permanent}}{\text{Total}}\) = \(\frac{y}{x}\)

(iii) Waste of soap

- produces scum during washing with soap

- blockage of pipes

- scales in boilers / furring of kettles

- leads to wastage of fuel

- not suitable for tanning / laundry / textile/ paper manufacturing industries

(b) (i) NaNO\(_3\) or KNO\(_3\)

conc H\(_2\)SO\(_4\)

(ii) concentrated H\(_2\)SO\(_4\)

heat (over a sand bath)

all glass apparatus

(iii) 2HNO\(_3\) + S → H\(_2\)SO\(_4\) + 2NO

OR

6HNO\(_3\) + S → H\(_2\)SO\(_4\) + 6NO\(_2\) + 2H\(_2\)O

II. no reaction / reaction prevented / metal passive oxide formed which coats metal

(c) Zinc oxide

Lead (II) oxide

Aluminium oxide

Tin(IV)oxide

Aluminium hydroxide

Tin (II) oxide

Lead (IV) oxide

Beryllium oxide

Correct Answer: D. there is higher demand for fruit in Western than in Africa

Correct Answer: C) Brain and spinal cord

Explanation

The nervous system is a part of the human body that helps us to communicate with the environment around us. It is responsible for sending and receiving messages between the brain and different parts of the body. The nervous system is made up of different parts, but the most important ones are the brain and spinal cord. These two organs are responsible for controlling and coordinating different body functions, including movement, sensation, and thought. Option A is incorrect because the kidney, bladder, and liver are not part of the nervous system. These organs are part of the urinary and digestive systems. Option B is also incorrect because the testes and ovaries are part of the reproductive system, not the nervous system. Option C is correct because the brain and spinal cord are the most important organs in the nervous system. The brain is responsible for receiving and interpreting information from the senses, processing thoughts and emotions, and controlling movement. The spinal cord is responsible for transmitting messages between the brain and different parts of the body. Option D is incorrect because muscles and skeleton are part of the musculoskeletal system, not the nervous system. In conclusion, the correct answer to the question is option C. The nervous system is made up of the brain and spinal cord, which are responsible for controlling and coordinating different body functions.

Correct Answer: B. 71%

Correct Answer: C. make a ba di sujud

Correct Answer: C. bile

Explanation

The underlined vowel sound in 'tie' is /a?/ as in 'bile'. Therefore, the word that has the same vowel sound as the one represented by the underlined letter(s) in 'tie' is 'bile'.

Correct Answer: B. marginal revenue product of labour