General knowledge Material- all Competitive

Adjectives -> He is a man of _______words
  1. Few
  2. Any
  3. Small
  4. Intelligent
The telescope which is free from chromatic and spherical aberrations is The telescope which is free from chromatic and spherical aberrations is
  1. refracting type
  2. reflecting type
  3. polarising type
  4. diffracting type
A box contains 100mg. of radioactive sample of half - life 270 days. After 540 days, the mass of radioactive material left will be
  1. 12.5 mg
  2. zero
  3. 50 mg
  4. 25 mg
If the sides of a triangle are in the ratio 1:2:3 then the triangle
  1. . right angled
  2. acute angled
  3. obtuse angled
  4. none of these
Electro-mechanical voltage regulators are used in •
  1. alternators
  2. transformers
  3. transmission
  4. motors
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