#1. Which of the following Scientists is associated with the theory of natural Selection during the evolution of life?

Mendel

Darwin

Haldane

Miller

#2. In which of the following conditions bio- gas is produced?

Presence of oxygen

Action of aerobic microorganisms

Action of anaerobic microorganisms

Presence of fertilizers

#3. Why do ventricles have thicker muscular walls than atria?

Ventricles receive oxygen-rich blood than atria

Ventricles have to pump blood into various organs

Atria have to pump blood into various organs

Ventricles first receives blood from the various organs

#4. Which ofthe following is not reflex action?

Breathing

Heart-pumping

Salivation

Movement of hand

#5. Which part of the brain maintains posture and equilibrium of the body?

Fore-brain

Mid-brain

Hind-brain

Spinal cord

#6. What is the colour of the Litmus solution when it is neither acidic nor basic?

Red

Yellow

Blue

Purple

#7. Which of the following statements is not correct?

All bases are soluble in water

All bases do not dissolve in water

An alkali is base that dissolves water

Bases generate hydroxide (OH-) ion in water

#8. What does ‘p’ represent in pH?

Potential

Property

Power

Potenz

#9. Which of the following does not represent refractive defect of vision?

Myopia

Hypermetropia

Presbyopia

Cataract

#10. During dispersion of white light by glass prism, which ofthe following light the spectrum bends the most?

Blue

Violet

Indigo

Red

#11. Which of the following phenomena is responsible for the twinkling of stars?

Reflection of Starlight

Refraction of Starlight

Dispersion of Starlight

Tyndall effect

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HPAS Previous Year Question Paper 2019 – SCIENCE

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