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