Q1. Apart from quinine, which one of the following herbal drug is used to cure malaria?
(a) Arteether
(b) Glace
(c) Lutivit
(d) Cineraria
Q2. Consider the following statements:
1. ECG is a test that measures the electrical activity of the heart.
2. ECG is not used to measure the rate and regularity of heart beats.
Which of the statement/s given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) None of these
Q3. The food material prepared in the plants is transported to the various organs by which of the following?
(a) Xylem
(b) Phloem
(c) Cortex
(d) Cambium
Q4. Consider the following statements:
1. Hepatitis-B is several times more infectious than HIV/AIDS.
2. Hepatitis-B can cause liver cancer.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Q5. Consider the following statements:
(i) Washing soda on strong heating gives sodium oxide and carbon dioxide.
(ii) Plaster of Paris is obtained by heating gypsum at 373 K.
(iii) Bleaching powder is used for disinfecting drinking water.
Which of these statement(s) is/are correct ?
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) All are correct
Q6. Biogas mainly consists of
(a) Carbon dioxide and hydrogen
(b) Hydrogen and methane
(c) Carbon dioxide and methane
(d) Hydrogen and oxygen
Q7. Which one of the following pairs is correctly matched?
(a) Mass Spectrograph : Chadwick
(b) Atomic number : Moseley
(c) Neutron : Millikan
(d) Measurement of charge of an electron : Aston
Q8. Electronic motors operating at low voltages tend to burn out because—
(a) they draw more current which is inversely proportional to the voltage.
(b) they draw more current which is inversely proportional to the square root of the voltage.
(c) they draw heat proportional to V2.
(d) low voltage sets in electrical discharge.
Q9. Rainbow is formed due to a combination of
(a) refraction and absorption
(b) dispersion and diffraction
(c) refraction and scattering
(d) dispersion and total internal reflection
Q10. The ultimate cause of water movement in a plant stem against gravity is
(a) Osmosis
(b) Photosynthesis
(c) Transpiration
(d) Diffusion
Q11. The main reason why antibiotics could not solve all the problems of bacterial diseases is
(a) Insensitivity of the individual following prolonged exposure to antibiotics
(b) Inactivation of antibiotics by bacterial enzymes
(c) Decreased efficiency of the immune system
(d) The development of mutant strains resistant to antibiotics
Q12. The chief constituent of cotton is
(a) Protein
(b) Fatty acid
(c) Cellulose
(d) Glycerine
Q13. Oxygen transportation in a human body takes place through
1. Blood
2. Lungs
3. Tissue
The correct sequence of transportation is
(a) 1, 2 and 3
(b) 3, 1 and 2
(c) 2, 1 and 3
(d) 1, 3 and 2
Q14. The only snake that builds a nest is
(a) Chain viper
(b) King cobra
(c) Krait
(d) Saw-scaled viper
Q15. It is more comfortable to wear white cloths in summer because
(a) they reflect heat falling on them.
(b) they radiate heat transferred from the body.
(c) they absorb perspiration.
(d) they are soothing to the eye.
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