Today’s GK Test Quiz

Most-spoken language in the world are: English 16.5%, Mandarin Chinese 14.6%, Hindi 8.3%, Spanish 7%, French 3.6%, Arabic 3.6%, Bengali 3.4%, Russian 3.4%, Portuguese 3.3%, Indonesian 2.6%. Out of the world's approximately 7.8 billion inhabitants, 1.35 billion speak English while 0.615 billion speak Hindi. (in the year 2020-21)

The sex ratio (also known as Gender Ratio) refers to the number of females per thousand males.

The Kalinga war was fought between Ashka and the state of Kalinga 261 BC. The massive bloodshed filled Ashoka with remorse and he adopted Buddhism under the Buddhist monk Upagupta and abandoned the policy of physical conquest and adopted the policy of cultural conquest.

Buddha Preaching the First Sermon at Sarnath 11th century. After attaining enlightenment at Bodh Gaya the Buddha went to Sarnath, and it was here that he preached his first discourse in the deer park to set in motion the 'Wheel of the Dharma'.

Biogas is the mixture of gases produced by the breakdown of organic matter in the absence of oxygen (anaerobically), primarily consisting of methane and carbon dioxide. Biogas can be produced from raw materials such as agricultural waste, municipal waste, plant material, sewage, green waste or food waste. Although, cattle dung has been recognised as the chief raw material for biogas plants.

Stains of rust on clothes can be removed by oxalic acid (ethanedioic acid). Oxalic acid is widely used as an acid rinse in laundries, where it is effective in removing rust and ink stains because it converts most insoluble iron compounds into a soluble complex ion.

The bleaching of Sulphur dioxide (SO₂) is mainly due to its reduction property and its temporary reaction as soon as it gains the required oxygen helps to regenerate its initial property.

Anthracite is the highest grade and best equality coal. It is a hard, very low content of volatile compact variety of coal that has a high luster. It has the highest carbon content (92.1% to 98%), the fewest impurities, and the highest calorific content.

Sulphur is added to make natural rubber more strong and more bouncy. Vulcanization is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulphur, which results in three-dimensional cross-linking of the chain rubber molecules (polyisoprene) bonded to each other by sulphur atoms.

India won a gold medal in football in an international tournament last in 1962 Jakarta Asian Games.

As per Article 118(4), the Speaker of the Lok Sabha presides over the joint sitting of the two Houses. The Speaker casts vote in the event of a tie.

A party is recognised as a state or regional party in a state if any of the following conditions is fulfilled:

1. If it secures 6% of the valid votes polled in the state assembly election of the state concerned and wins 2 seats in that assembly or
2. If it secures 6% of the valid votes polled in the Lok Sabha election from the state concerned and wins 1 seat in the Lok Sabha from that state or
3. If it wins 3% of seats in the legislative assembly of the state concerned or 3 seats in the assembly, whichever is more or
4. If it wins 1 seat in the Lok Sabha for every 25 seats or any fraction thereof allotted to the state at a general election to the Lok Sabha from the state concerned or
5. If it secures 8% of the total valid votes polled in the state assembly election of the state concerned or Lok Sabha from that state. This condition was added in 2011.

The correct match is as follows:

An Open Market Operation (OMO) is the buying and selling of government bonds and securities in the open market by the RBI in India.

When marginal cost is less than average cost, average cost falls and when marginal cost is greater than average cost, average cost rises.

'Lakh Baksh' (giver of lakhs) was a title given to the ruler Qutub-ud-din Aibak. He was called so because of his generosity and gave liberal donations.

The sum of kinetic energy and potential energy is negative. This is because for the velocity less than escape velocity the missile is bounded due to the gravitational field of the earth. Hence its total energy is negative.

In solar cookers, sunlight is converted to thermal energy. Infrared rays are responsible for the working of the solar cooker. Infrared radiation has the right energy to make the water, fat and protein molecules in food vibrate vigorously and heat up.

Among the given materials sound travels fastest in steel. Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. Sound cannot travel in a vacuum as there is no medium.

The Rashtrapati Bhavan is the official residence of the President of India at the western end of Rajpath in New Delhi, India. It was the creation of Sir Edwin Lutyens and Herbert Baker.