Q1. The transfer of minerals from top soil to subsoil through soil water is called?
(a) Percolation
(b) Conduction
(c) Leaching
(d) Transpiration
Q2. Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
(a) Conduction
(b) Convection
(c) Radiation
(d) Both conduction and convection
Q3. Polio is caused by
(a) Bacteria
(b) Virus
(c) Fungus
(d) Protozoa
Q4. In bio fortification technique plant breeders use breeding to overcome
(a) Loss due to insect pests
(b) Decrease in food production
(c) Deficiencies of micronutrients and vitamins
(d) Loss due to plant diseases
Q5. Morphology of Chromosomes can be best studied at ______
(a) Interphase
(b) Prophase
(c) Metaphase
(d) Zygotene
Q6. The 'Choke' used with a tube light is basically ____
(a) an inductor
(b) a capacitor
(c) a transformer
(d) a resistor
Q7. Curie is an unit of _______
(a) Radioactivity
(b) energy of Gamma rays
(c) intensity of Gamma rays
(d) work function
Q8. For extinguishing fire, we use______
(a) Hydrogen
(b) Carbon Monoxide
(c) Carbon Dioxide
(d) Marsh gas
Q9. The chemical name of quartz is ______
(a) Calcium oxide
(b) Calcium phosphate
(c) Sodium phosphate
(d) Sodium silicate
Q10. Which of the following cannot be emitted by radioactive substances during their decay?
(a) Electrons
(b) Protons
(c) Neutrons
(d) Helium
Q11. Which waves are used in Sonography?
(a) Microwaves
(b) Sound waves
(c) Infrared waves
(d) Ultrasonic waves
Q12. Group displacement law was given by–
(a) Bacquerel
(b) Rutherford
(c) Mendeleev
(d) Soddy and Fajan
Q13. The first indication that a stable nucleus can be broken down was afforded by–
(a) Rutherford
(b) Madam Curie
(c) Soddy
(d) Schmidt
Q14. The pacemaker of heart is—
(a) Bundle of His
(b) S A node
(c) AV node
(d) Purkinje fibres
Q15. Duodenum is a part of which of the following?
(a) brain
(b) intestines
(c) liver
(d) lungs
No comments:
Post a Comment