Q1. Rocket works on the principle of
(a) Newton’s Third Law
(b) Newton’s First Law
(c) Newton’s Second Law
(d) Archimedes Principle
Q2. Clouds float in the atmosphere because of their
(a) low pressure
(b) low density
(c) low viscosity
(d) low temperature
Q3. The damage of the human body due to radiation (X-rays or γ- rays etc,) is measured in:
(a) Rems
(b) Roentgen
(c) Curie
(d) Rads
Q4. Bakelite is a copolymer of Phenol and
(a) Formaldehyde
(b) Acetaldehyde
(c) Benzaldehyde
(d) Cinnadehyde
Q5. The splitting of white light into its components is due to:
(a) reflection
(b) refraction
(c) transmission
(d) dispersion
Q6. The freezing point of fresh water is _______.
(a) 4°C
(b) 3°C
(c) 5°C
(d) 0°C
Q7. A real gas can act as an ideal gas in
(a) high pressure and low temperature
(b) low pressure and high temperature
(c) high pressure and high temperature
(d) low pressure and low temperature
Q8. Purity of a metal can be determined with the help of
(a) Pascal’s law
(b) Boyle’s law
(c) Archimedes principle
(d) Conservation of mass principle
Q9. Light year is a unit of
(a) Light
(b) Current
(c) Distance
(d) Time
Q10. The unit of Planck’s constant is
(a) Js
(b) Js-2
(c) J/s
(d) Js2
Q11. Golden view of sea shell is due to
(a) Diffraction
(b) Dispersion
(c) Polarization
(d) Reflection
Q12. The sky appears blue due to
(a) Rayleigh scattering
(c) Back scattering
(d) None of the above
(a) Micro waves
(b) Infra-red waves
(c) Sound waves
(d) Ultrasonic waves
Q14. The Bhopal tragedy was caused by the gas?
(a) phosgene
(b) carbon monoxide
(c) Methyl Isocyanate
(d) Chlorine
Q15. Which of the following is responsible for permanent hardness of water?
(a) magnesium bicarbonate
(b) sodium chloride
(c) calciumsulphate
(d) calcium bicarbonate
CRACK SSC CGL 2017
