Question

Complete the reaction

(a)  

(b)  

(c)  

(d)    

Answer

(a)  

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In a forward biased PN-junction diode, the potential barrier in the depletion region is of the form …       

(a)

(b)

(c)

(d)

Internal forces can change:
  1. The linear momentum but not the kinetic energy.
  2. The kinetic energy but not the linear momentum.
  3. Linear momentum as well as kinetic energy.
  4. Neither the linear momentum nor the kinetic energy.
Following operations can be performed on a capacitor:
X - connect the capacitor to a battery of emf $\in.$
Y - disconnect the battery.
Z - reconnect the battery with polarity reversed.
W - insert a dielectric slab in the capacitor.
  1. In XYZ (perform X, then Y, then Z) the stored electric energy remains unchanged and no thermal energy is developed.
  2. The charge appearing on the capacitor is greater after the action XWY than after the action XYW.
  3. The electric energy stored in the capacitor is greater after the action WXY than after the action XYW.
  4. The electric field in the capacitor after the action XW is the same as that after WX.

A dip needle lies initially in the magnetic meridian when it shows an angle of dip q at a place. The dip circle is rotated through an angle x in the horizontal plane and then it shows an angle of dip . Then   is

(a)  

(b)

(c)

(d) cos x

The image of an extended object, placed perpendicular to the principal axis of a mirror, will be erect if:

The fundamental frequency of a vibrating organ pipe is 200Hz.
  1. The first overtone is 400Hz.
  2. The first overtone may be 400Hz.
  3. The first overtone may be 600Hz.
  4. 600Hz is an overtone.
The capacitor of an oscillatory circuit of negligible resistance is enclosed in a evacuated container. The frequency of the circuit is 150 kHZ and when the container is filled with a gas, the frequency changes by 100 HZ. The dielectric constant of the gas.

de-Broglie wavelength of a body of mass 1 kg moving with velocity of 2000 m/s is

(a) 3.32 × 10–27 Å

(b) 1.5 × 107 Å

(c) 0.55 × 10–22 Å

(d) None of these

In YDSE, the slit widths are in the ratio of 1:9. The ratio of intensity of the maxima to that of the minima is:

A metallic square loop ABCD is moving in its own plane with velocity v in a uniform magnetic field perpendicular to its plane as shown in the figure. An electric field is induced

(a) In AD, but not in BC

(b) In BC, but not in AD

(c) Neither in AD nor in BC

(d) In both AD and BC