OBJECTIVE QUESTION – II

1. An isolated point charge +q is placed inside the Faraday Cage . Its surface must have charge equal to –

  • a.) zero
  • b.) +q
  • c.) -q2
  • d.) +2q

2. The carbonyl compound formed when ethanol gets oxidised using this copper based catalyst(CuCl) can also be obtained by ozonolysis of :

  • a.) But – 1 – ene
  • b.) But – 2 – ene
  • c.) Ethene
  • d.) Pent – 1 – ene

3. Which if the following is a secondary allylic alcohol ??

  • a.) Butan-2-ol
  • b.) But-2-en-2-ol
  • c.) Prop-2-enol
  • d.) But-3-en-2-ol

4. KMnO4 acts as an oxidizing agent in the acidic medium. The number of moles of KMnO4 that will be needed to react with one mole of sulphide ion in acidic solution is :

  • a.) 2/5
  • b.) 3/5
  • c.) 4/5
  • d.) 1/5

5. What is the mixture of D-(+) glucose and D-(+) fructose known as  ?

  • a.) Anomers
  • b.) Racemic mixture
  • c.) Invert Sugar
  • d.) Optical Mixture

6. A standard 100 watt incandescent light bulb emits approximately

  • a.) 1200 Lumen
  • b.) 700 Lumen
  • c.) 1700 Lumen
  • d.) 1000 Lumen

7. Common Name of Ethane-1,2-dioic acid is known as

  • a.) Acetic acid
  • b.) Phthalic acid
  • c.) Adipic acid
  • d.) Oxalic acid

8. The best reagent for converting 2-phenylpropanamide into 2-phenylpropanamine is :

  • a.) excess H2
  • b.) Br2 in aqueous NaOH
  • c ) Iodine in the presence of red phosphorus
  • d.) LiAlH4 in ether

9. The output of an AND gate is connected to both the inputs of a NOR gate then this circuit will act as a

  • a.) OR gate
  • b.) NOR gate
  • c.) AND gate
  • d.) NAND gate

10. Electrical force is acting between two charges kept in vacuum . A copper plate is placed between the charges , the force now is

  • a.) more
  • b.) less but not zero
  • c.) remains unchanged
  • d.) zero

11. A susceptibility of a certain magnetic material is 400 . What is the class of the magnetic material ??

  • a.) Diamagnetic
  • b.) Paramagnetic
  • c.) Ferromagnetic
  • d.) Ferroelectric

12. Ratio of longest wavelengths corresponding to Lyman and Balmer Series in hydrogen spectrum is

  • a.) 5/27
  • b.) 3/23
  • c.) 7/29
  • d.) 9/31

13. The ratio of volumes of nuclei (assumed to be in spherical shape ) with respective mass number 8 and 64 is

  • a.) 0.5
  • b.) 2
  • c.) 0.125
  • d.) 0.25

14. Which of the following materials can be used to make a Faraday cage ??

  • a.) Plastic
  • b.) Glass
  • c.) Copper
  • d.) Wood

15. LED is a :

  • a.) Lightly doped p-n junction diode
  • b.) Heavily doped p-n junction diode
  • c.) Moderately doped p-n junction diode
  • d.) Two back to back p-n junction diode

16. Write the IUPAC name of CH3 —- CH2 —- CHO | NH2

  • a.) 1- Aminopropanaldehyde
  • b.) 2 – Aminopropanal
  • c.) 1 – Aminoethan – 1 – al
  • d.) None of the above

17. The spin only magnetic moment value ( in Bohr magneton units ) of Cr(CO)6 is

  • a.) 0
  • b.) 2.84
  • c.) 4.90
  • d.) 5.92

18. The relative stability of +1 oxidation state of group 13 elements follows the order

  • a.) Al < Ga < To < In
  • b.) Al < Ga < In < Tl
  • c.) Tl < In < Ga < Al
  • d.) Ga < Al < In < Tl

19. Spontaneous adsorption of a gas on solid surface is an exothermic process , because

  • a.) ∆H increases for system
  • b.) ∆S increases for gas
  • c.) ∆S decreases for gas
  • d.) ∆G increases for gas

20. Acidic hydrogen is present in

  • a.) ethyne
  • b.) ethene
  • c.) benzene
  • d.) ethane

21. Which if the following is least ionic ??

  • a.) FeCl2
  • b.) ZnCl2
  • c.) CdCl2
  • d.) MgCl2

22. A steady current flows in a metallic conductor of non uniform cross-section. The quantity/quantities constant along the length of the conductor is/are

  • a.) current , electric field and drift speed
  • b.) drift speed only
  • c.) current and drift speed
  • d.) current only

23. A He^+ ion is in its first excited state. It’s ionisation energy is

  • a.) 54.40 eV
  • b.) 13.60 eV
  • c.) 48.36 eV
  • d.) 6.04 eV

24. The specific rate constant of a first order reaction depends on the

  • a.) concentration of the reactant
  • b.) concentration of the product
  • c.) time
  • d.) temperature

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