Tech Charades - A

Which of the following is NOT a semiconductor?

• Arsenic

• Germanium

• Germanium

• 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

What year was the first human sent to space?

• 1957

• 1961

• 1961

• 1942

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

• Halogens

• Metalloid

• Pre-transition metal

• Alkali metal

Which of the following chemicals is also known as "butter of tin" ?

• Stannic chloride

• Sodium perborate

• Potassium nitrate

• Magnesium hydroxide

Where does the oxidation take place in a Galvanic cell ?

• Anode

• Cathode

• Oxidation does not take place

• None of the above