Q.11)-The medicinal plant used in preparations for skin care is
  • Cinchona
  • Amla
  • Aloevera
  • Rauwolfia
Q.12)-Growing more than one crop n a piece of land during the year is known as
  • Uni cropping
  • Multipe cropping
  • Double cropping
  • Tripple cropping
Q.13)-The froduction of alcohol from organic compunds by micro organisms is known as
  • Combustion
  • Fermentation
  • Anaerobic Respiration
  • Aerobic Respiration
Q.14)-Bio-diesel mostly produced by
  • Myrttaceae
  • Malvaceae
  • Liliaceae
  • Duphorbiaceae
Q.15)-The enzyme that coagulates milk into curd is
  • Rennin
  • Pepsin
  • Resin
  • Citrate
Q.16)-From the bark of which plant is Quinone extracted
  • Eucalyptus
  • Cinchona
  • Neem
  • Cedar
Q.17)-Chewing gum is made from
  • Resin
  • Tannin
  • Latex
  • Gum
Q.18)-Which one of the following animal is called farmer's friend
  • Ant
  • Eathworm
  • Bee
  • butterfly
Q.19)-The enqyme in whose presence giucose and fructose are converted into alcohol is
  • Diastase
  • Maltase
  • Invertase
  • Zymase
Q.20)-Butter is
  • Fat dispersed in milk
  • Water dispersed in fat
  • Water dispersed in oil
  • Fat dispersed in water