Tech-Charades

Which of the following is NOT a semiconductor?

• Arsenic

• Germanium

• Silicon

• All of these

The purpose of choke in tube light is to ?

• Decrease the current

• Increase the current

• Decrease the voltage momentarily

• Increase the voltage momentarily

What is the relationship between resistivity "r" and conductivity "s"?

• R = s²

• R = s

• R = 1/s

• R > s

After the first photons of light are produced, which process is responsible for amplification of the light?

• Blackbody radiation

• Stimulated emission

• Planck's radiation

• Einstein oscillation

Resistivity of semiconductor depends on ?

• Atomic nature of semiconductor

• Shape and atomic nature of semiconductor

• Length of semiconductor

• Shape of semiconductor

98, 196 , ___, 392, 490, 588

• 254

• 349

• 294

• 276

Which year was the first human sent to space?

• 1957

• 1961

• 1969

• 1975

Which of the following is NOT a group on the periodic table?

• Halogens

• Metalloid

• Pre-transition metal

• Alkali metal

Where does the oxidation take place in a Galvanic cell?

• Anode

• Cathode

• Oxidation does not take place

• None of the above

The first metal used by human was

• Iron

• Copper

• Gold

• Bronze