Questions

In a hydrogen atom, an electron moves in an orbit of radius 5.0 x 10-11 m with a speed of 2.2 x 106 m/s. What is the equivalent current? (Electronic charge = 1.6 x10-19 C)

SAARC Agriculture Centre (SAC) is based in which city?

A stretch of sea water, partly or fully separated by a narrow strip from the main sea is called

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

"What makes you so sad?" she asked Manoj.

In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct

1. Suddenly the man heard the low hum of an engine.
P. Instead, it grew louder and louder and seemed to be coming from above.
Q. At first he thought that it must be a car travelling along the road he had recently left.
R. He looked up quickly and saw an aeroplane cutting a crazy, zigzag path across the sky.
S. He expected the noise to fade away in the distance.
6. It disappeared for an instant behind some clouds, then emerged and plunged into the field.

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

The first working steam­ powered vehicle was designed and most likely built by Ferdinand Verbies, a Flemish member of a Jesuit mission in China around 1672. It was a 65 cm long scale­ model toy for the Chinese Emperor, that was unable to carry a driver or a passenger. It is not known if Verbiest's model was ever built. Nicolas- Joseph Cugnot is widely credited with building the first full­ scale, self ­propelled mechanical vehicle or automobile in about 1769; he also created a steam­ powered tricycle. He constructed two steam tractors for the French Army, one of which is preserved in the French National Conservatory of Arts and Crafts. His inventions were however handicapped by problems of water supply and maintaining steam pressure. In 1801, Richard Trevithick built and demonstrated his Puffing Devil road locomotive, believed by many to be the first demonstration of a steam ­powered road vehicle. It was unable to maintain sufficient steam pressure for long periods. Sentiment against steam ­powered road vehicles led to the Locomotive Acts of 1865. In 1807 Nicephore Niepce and his brother Claude probably created the world's first internal combustion engine which they called Pyreolophore.

The problem with Trevithick's Puffing Devil was:

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

____________ so long ago, virtually everyone seemed _____________ that a sizeable majority of British voters ____________ reaffirm their faith and confidence in a united Europe. Unfortunately, what was considered to be a remote possibility has actually become a very ____________ reality. A small majority of voters ____________ to take Britain out of the European Union (EU) in the referendum held on June 23.

____________ so long ago,

Highest percentage of carbon is found in which form of coal?