Index
TestingImage

IMPORTANT QUESTIONS

  1. Q341 Which organism occupies first trophic level in a food chain?
    Easy View solution
  2. Q342 If an object of 7cm height is placed at a distance of 12cm from a convex lens of focal length 8cm, find the position, nature and height of the image.
    Medium View solution
  3. Q343 An electric heater connected to the 230 V supply. current of 8A through the heater energy transferred to heater second?
    Medium View solution
  4. Q344 A convex lens has a focal length of 20 cm. Calculate at what distance from the lens should an object be placed so that it forms an image at a distance of 40cm on the other side of the lens. State the nature of the image formed?
    Medium View solution
  5. Q345 A pond of depth 20cm is filled with water of refractive index 4/3. Calculate apparent depth of the tank when viewed normally.
    Medium View solution
  6. Q346 Name the instrument used to measure potential difference.
    Easy View solution
  7. Q347 Calculate the power used in 2Ω resistor in each (i) a 6V battery in series with 1Ω and 2Ω resistor (ii) a 4V battery in parallel with 12Ω and 2Ω resistor.
    Hard View solution
  8. Q348 The family of elements to which potassium belongs is
    Easy View solution
  9. Q349 Three elements X, Y, Z having Atomic number 12, 8, 17. Then give chemical formula of compound when X and Y combine, X and Z combine.
    Medium View solution
  10. Q350 Give an example of a double displacement reaction other than the one given.
    Easy View solution