UPSC CAPF Previous Year GK Questions

Boric acid dissolves in water to give a true solution, in which the dispersed particles are individual molecules small enough to pass through a filter paper and even a parchment membrane, and the mixture shows no Tyndall effect.

The United Nations works in six official languages, Arabic, Chinese, English, French, Russian and Spanish. Of the four names in the list, Arabic, Spanish and Chinese are all official, so only German, the second item, is not.

Harshavardhana was a dramatist as well as a king, and three Sanskrit plays are credited to him: Ratnavali, Priyadarshika and Nagananda.

The Supreme Court has held that when a court tests whether a law is constitutional, and finds that the law gives effect to a Fundamental Duty, it may treat the law as "reasonable" under Article 14 or Article 19 and uphold it.

Early Mathura Buddhas show the right hand raised with the palm facing out, the gesture that says "fear not". The Mathura School flourished under the Kushanas in the first centuries CE, at the same time as the Gandhara school of the north-west.

Baiju, also called Baiju Nayak, was the leading singer at the court of Raja Man Singh Tomar in Gwalior and later served Sultan Bahadur Shah of Gujarat.

The Indian Forest Act of 1878 created the three classes of reserved, protected and village forests. British interest in Indian forests grew as the railways and shipbuilding needed huge amounts of timber.

Both treaties were made to save the ozone layer in the stratosphere, which screens out harmful ultraviolet rays. The Vienna Convention for the Protection of the Ozone Layer was adopted in 1985 as a framework agreement.

Anabaena is a cyanobacterium, a prokaryote with no true nucleus, and all prokaryotes are placed in Monera. In R.H.

Nitrogen is an unreactive gas, so it drives the oxygen out of the packet and stops the oil in the chips from getting oxidised.

Violet has the shortest wavelength in visible light, so glass slows it the most and bends it the most. White light is a mix of seven colours, remembered as VIBGYOR.

Each metal here is paired with one of its best-known ores. Bauxite is hydrated aluminium oxide; alumina is refined from it and then broken down by electrolysis in the Hall-Héroult process.

The number 235 is the mass number and uranium's atomic number is 92, so the nucleus holds 235 minus 92, that is 143 neutrons.

The MSP is announced before sowing so that farmers know the lowest price at which the government will buy their crop.

When demand pushes the economy to produce more than it can at full employment, the extra demand only drives prices up.

A progressive income tax takes a bigger share when incomes rise and a smaller one when they fall, without any new decision by the government.

Elasticity measures how strongly the quantity demanded reacts to price, and zero means no reaction at all. Price elasticity of demand is the percentage change in quantity demanded divided by the percentage change in price.

Kolkata is the only major port of India built on a river, the Hooghly, about 200 km upstream from the sea.

The Sutlej feeds the Indus, the Kosi the Ganga, the Teesta the Brahmaputra and the Chambal the Yamuna.

When a river cuts across the narrow neck of a loop and silt seals both ends, the old loop is left behind as a curved lake.