Question 1451 The group of metals Fe, Co, Ni may be the best called as? A) Rare metals B) Alkaline metals C) Main group metals D) Transition metals No Details
Question 1452 Bar is the unit of? A) Current B) Heat C) Temperature D) Atmospheric pressure No Details
Question 1454 In radar system, generation of power at high frequency needs? A) High power magnetron B) High power transformer C) High power antenna D) None of these No Details
Question 1455 The colour of an opaque object is due to the colour it? A) Refracts B) Scatters C) Absorbs D) Reflects No Details
Question 1457 Which among the following is a positively charged particles emitted by a radioactive element? A) Beta ray B) Gamma ray C) Cathode ray D) Alpha ray No Details
Question 1458 Nuclear fission is caused by the impact of? A) Proton B) Electron C) Neutron D) Both A and B No Details
Question 1459 The hydraulic brakes used in automobiles is a direct application of? A) Toricellian law B) Archimedes principle C) Bernoulli's theorem D) Pascal's law No Details
Question 1460 Quartz crystals normally used in quartz clocks etc is chemically? A) Germanium oxide B) Silicon dioxide C) Sodium silicate D) Carbon dioxide No Details