Defence GK Questions 2026

Most places have two high tides a day, and because the moon rises about 52 minutes later each day, each high tide comes about 12 hours 26 minutes after the last.

In Köppen's code, C means a warm temperate climate, f means rain in all seasons with no dry season, and a means a hot summer.

The mistral is a cold, dry northerly wind that blows from the Alps down the Rhone valley of France to the Mediterranean coast.

Ziyarat means a visit to a sacred place, and in India it came to mean the pilgrimage to the dargah of a sufi saint to seek blessings.

An allele is one of the alternative forms of the same gene, found at the same place on a pair of matching chromosomes.

It was set up in 1992 under the National Commission for Women Act, 1990, so it is a statutory body, not a constitutional one.

Lysosomes are small sacs bound by a membrane that are filled with digestive enzymes able to break down almost any material in the cell.

In a crash a sensor fires an igniter, and sodium azide breaks down almost instantly into sodium and a large volume of nitrogen gas that fills the bag.

Kerosene and petrol mix completely with each other, and their boiling points are close, so they are separated by fractional distillation.

The Tsangpo enters India as the Dihang and the Godavari has the second largest basin, but the Chambal and Betwa join the Yamuna, not the Ganga.

Diamond is an allotrope of carbon, made of carbon atoms alone and nothing else. In diamond each carbon atom is joined to four other carbon atoms by strong covalent bonds, forming a rigid three-dimensional network.

Oxygen in the air reacts with the fats and oils, and the food turns rancid, with a bad smell and taste.

Feldspar makes up about half of the earth's crust and is light cream to salmon pink in colour, but magnesium is not its common element.

When sandstone, made mostly of quartz grains, is put under great heat and pressure, the grains fuse together and the rock turns into quartzite.

The volcanoes of Hawaii, such as Mauna Loa and Kilauea, are broad, gently sloping cones built by runny basaltic lava.

Above the tree line in the western and central Himalaya the mean temperature of even the warmest month stays below ten degrees Celsius, which is the defining condition of the E group, and the tundra and ice-cap variants of that group occupy the high valleys and the snowfields.

C. W. Thornthwaite measured precipitation effectiveness and thermal efficiency, that is, the balance between the water a place receives and the water it loses to evaporation and transpiration, and because these are derived quantities rather than raw readings his scheme is called rational.

Koppen was born in Russia and worked in Germany, and his training in plant science is the reason his classification uses natural vegetation as the index of climate and sets its boundaries where vegetation belts change.

Koppen set the boundary of the tropical group at a mean temperature of 18 degrees Celsius in the coldest month, the value below which many tropical plants cannot thrive, and the whole of peninsular India as well as both coasts clears it.

Within the dry B group Koppen used two capital letters for the degree of dryness, S for the steppe, which is semi-arid, and W for the desert, which is fully arid, so BShw describes a hot semi-arid climate with a dry winter.