Q.1
If a conductor is folded 8 times then the resistance will be
  • 8 times
  • 4 times
  • 1/8 times
  • 1/64 times
Q.2
If R is the resistance, I is the current flowing and V is the potential difference across a conductor at a constant temperature, then Ohm’s law is
  • I = VR
  • R = VI
  • V = IR
  • V = I2R
Q.3
How much energy is Kilowatt hour is consumed in operating two 200 watt bulb for 10 hours per day in a month (30 days)?
  • 60 KWH
  • 6 KWH
  • 30 KWH
  • 200 KWH
Q.4
Particles released from Uranium atom in the increasing order of their velocity.
  • Alpha, gamma, beta
  • Alpha, beta, gamma
  • Gamma, beta, alpha
  • Beta, gamma, alpha
Q.5
We can write on a black board because of the force called
  • Viscous force
  • Frictional force
  • Gravitational force
  • Nuclear force
Q.6
The energy released by sun is due to
  • Fission reaction
  • Both fission and fusion reaction
  • Fusion reaction
  • Chemical reaction
Q.7
Which of the following are exothermic processes? (i) The reaction of water with lime (ii) Dilution of an acid (iii) Evaporation of water (iv) Sublimation of Camphor
  • (i) and (ii)
  • (ii) and (iii)
  • (i) and (iv)
  • (iii) and (iv)
Q.8
Which of the following gases can be used for storage of fresh sample of an oil for a long time ?
  • \(CO_2\) or \(O_2\)
  • \(N_2\) or \(O_2\)
  • \(CO_2\) or \(He\)
  • \(He\) or \(N_2\)
Q.9
An aqueous solution turns red litmus solution blue. Excess addition of which of the following will reverse the change ?
  • Baking powder
  • Lime
  • Ammonium hydroxide solution
  • Hydrochloric Acid
Q.10
Silver articles became black on exposure to air for longer time which may be due to the formation of -
  • \(AgCN\)
  • \(Ag_2O\)
  • \(Ag_2S\)
  • \(Ag_2S\) and \(AgCN\)
Q.11
Which of the following four metals would be displaced from the solution of its salts by other three metals ?
  • Mg
  • Cu
  • Zn
  • Fe
Q.12
Which of the following is not required to find the pH of a solution ?
  • pH paper
  • Litmus paper
  • Universal indicator
  • Standard pH chart
Q.13
Soaps are –
  • Calcium Salt of acids
  • Magnesium salts of acids
  • Sodium and potassium salts of long chain fatty acids
  • Salts of bases
Q.14
The general formula of esters where R represents the alkyl group is -
  • ROH
  • RCOR
  • RCOOH
  • RCOOR
Q.15
Which of the following does not belong to the same homologus series ?
  • \(CH_4\)
  • \(C_2H_6\)
  • \(C_3H_8\)
  • \(C_3H_6\)
Q.16
Which of the following elements would lose an electron easily ?
  • Mg
  • Na
  • Rb
  • Ca
Q.17
Upto which element the law of octaves was found to be applicable ?
  • O
  • Ca
  • Co
  • K
Q.18
Where would your locate the element with electronic configuration 2,8 in the modern periodic table ?
  • group 8
  • group 2
  • group 15
  • group 18
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