Assuming complete ionisation same moles of which of the following compounds will require the least amount of acidified KMnO₄ for complete oxidation
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(a) FeSO₃ (b) FeC₂O₄ (c) Fe(NO₂)₂ (d) FeSO₄
Correct Answer: […]
A gas such as carbon monoxide would be most likely to obey the ideal gas law at
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(a) low temperatures and high pressures (b) high temperatures and high pressures (c) low temperatures and […]
The input signal given to a CE amplifier having a voltage gain of 150 is Vi=2 cos (15t+π/3). The corresponding output signal will be
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(a) 75 cos(15t+2π/3) (b) 2 cos(15t+5π/6) (c) 300 […]
Two slits in Young’s experiment have widths in the ratio 1:25. The ratio of intensity at the maxima and minima in the interference pattern, Imax/Imin is
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(a) 121/49 (b) 49/121 (c) 04/09/18 […]
A series R-C circuit is connected to an alternating voltage source. Consider two situations: (A) When capacitor is air filled (B) When capacitor is mica filled Current through resistor is i and voltage across capacitor […]
If potential(in volts) in a region is expressed as V(x,y,z) = 6xy – y + 2yz, the electric field (in N/C) at point (1,1,0) is
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(a) -(6i+5j+2k) (b) -(2i+3j+k) (c) -(6i+9j+k) (d) […]
A force F=ai+3j+6k is acting at a point r=2i-6j-12k. The value of α for which angular momentum about origin is conserved is
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(a) 2 (b) zero (c) 1 (d) -1
Correct Answer: […]
Two particles A and B, move with constant velocities V₁ and V₂. At the initial moment their position vectors are r₁ and r₂ respectively. The condition for particles A and B for their collision is […]
If vectors A=cos wti + sin wtj and B= cos wt/2 i + sin wt/2 j are functions of time, then the value of t at which they are orthogonal to each other is
The position vector of a particle R as a function of time is given by R=4sin(2πt)i + 4 cos (2πt) j, where R is in meter, t in seconds and i and j denote unit […]
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