What is the range, in hertz, of the normal human hearing
(A) 10 Hz to 10 kHz
(B) 20 Hz to 20 kHz
(C) 2000Hz
(D) 40 Hz to 40 kHz
Which of the following is caused by a deficiency of iron in the diet
(A) Giotre
(B) Scurvy
(C) Anaemia
(D) Rickets
Which of the following gases do plants and trees give out during photosynthesis
(A) Hydrogen
(B) Nitrogen
(C) Oxygen
(D) Carbon dioxide
The sounds of which frequency are human beings most sensitive
(A) 400 hertz
(B) 20 hertz
(C) 20000 hertz
(D) 5000 hertz
What is the common name for the drug acetyl salicylic acid
(A) Paracetamol
(B) Analgin
(C) Aspirin
(D) Penicillin
Which of the following is affected by rickets in the human body
(A) Bones
(B) Tissues
(C) Muscles
(D) Blood