Objective Question – I

1. What is OHM’s LAW ??

  1. V=IR
  2. R=VI
  3. I=VR
  4. None Of These

2. In Mond’s Process the gas used for refining of a metal is?

  1. H2
  2. CO2
  3. CO
  4. N2

3. Which Condition is not satisfied by an ideal solution ?

  1. ∆H mixing = 0
  2. ∆V mixing = 0
  3. Raoult’s Law is Obeyed
  4. Formation of an azeotropic mixture

4. What is the nature of Lysine Amino Acid ?

  1. Alpha Amino Acid
  2. Beta Amino Acid
  3. Gamma Amino Acid
  4. Amino acid synthesized in body

5. An optical fibre works on principle of : ??

  1. Reflection
  2. Refraction
  3. Total Internal Reflection
  4. None of the Above

6. No. Of Electrons In The Valence shell of semiconductor is : ??

  1. 1
  2. 2
  3. 3
  4. 4

7. What is the wavelength of light for the least energetic photon emitted in the Lyman Series of hydrogen spectrum (Take HC = 1240 ev-nm)

  • a.) 122 nm
  • b.) 82 nm
  • c.) 150 nm
  • d.) 102 nm

8. Guess the Correct Spelling of :

  1. MISISIPI
  2. MISSISSIPI
  3. MISSISSIPPI
  4. MISSISSIPI
  5. MISISIPPI

9. The metal that gives hydrogen gas upon treatment with both acid as well as base is :

  • a.) Magnesium
  • b.) Mercury
  • c.) Zinc
  • d.) Iron

10. Which Gas is evolved when PbO2 is treated with concentrated HNO3 ?

  • a.) NO2
  • b.) O2
  • c.) N2
  • d.) N2O

11. Which of the following isomers of phosphorus is thermodynamically most stable

  • a.) Red
  • b.) White
  • c.) Black
  • d.) Yellow

12. A vessel contains 1 mole of oxygen and two moles of nitrogen at 300K . the ratio of the average rotational kinetic energy per O2 molecule to per N2 molecule is :

  • a.) 1:1
  • b.) 1:2
  • c.) 2:1
  • d.) 1:3

13. The peptide that gives positive ceric ammonium nitrate and carbylamine tests is

  • a.) Lys-Asp
  • b.) Ser-Lys
  • c.) Gln-Asp
  • d.) Asp-Gln

14. The relationship between Brewster angle ‘π’ and the speed of light ‘v’ in the denser medium is :

  • a.) v tan π = c
  • b.) c tan π = v
  • c.) v sin π = c
  • d.) c sin π = v

15. The wavelength and intensity of light emitted by an LED depend upon :

  • a.) forward bias and energy gap of the semiconductor
  • b.) energy gap of the semiconductor and reverse bias.
  • c.) energy gap only
  • d.) forward bias only

16. A current of 5A is flowing from east to west in a long straight wire kept on a horizontal table. The magnetic field developed at a distance of 10cm due south on the table is :

  • a.) 1 X 10⁵ T acting downwards
  • b.) 1 X 10⁵ T acting upwards
  • c.) 2 X 10⁵ T acting downwards
  • d.) 2 X 10⁵ T acting upwards

17. The amount of electricity required to produce one mole of Zn from ZnSO4 solution will be :

  • a.) 3F
  • b.) 2F
  • c.) 1F
  • d.) 4F

18. In a Crystal , the distance between two atoms is :

  • a.) 200 Å to 300 Å
  • b.) 2Å to 3 micron
  • c.) 2Å to 3Å
  • d.) 2mm to 3mm

19. The reverse breakdown voltages of LED’s are :

  • a.) Very low and typically around 0.5V
  • b.) Very low and typically around 5V
  • c.) Very high and typically around 50V
  • d.) Very low and typically around 0.05V

20. Name the cell which is generally used in hearing aids :

  • a.) Daniel cell
  • b.) Mercury Cell
  • c.) Lead storage Battery
  • d.) Lithium Cell

21. A first order reaction is 50% completed in 1.26 X 10¹⁴ s. How much time would it take for 100% completion ?

  • a.) 1.26 X 10¹⁵ s
  • b.) 2.52 X 10¹⁴ s
  • c.) 2.52 X 10²⁸ s
  • d.) Infinite

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