NDA GK Questions 2026

A microphone turns sound into an electrical signal, and a speaker turns an electrical signal back into sound. Both are transducers, devices that change energy from one form to another.

Only this equation has the same number of iron, hydrogen and oxygen atoms on both sides. Iron reacts with steam to form iron(II,III) oxide and hydrogen gas.

Any particle smaller than an atom is a subatomic particle, and the muon qualifies just as the electron, proton and neutron do.

Lysosomes are membrane-bound sacs of digestive enzymes that break down foreign material such as bacteria and worn-out cell parts. Lysosomes are formed by the Golgi apparatus and contain hydrolytic enzymes that work in an acidic interior.

Humus is the dark, amorphous organic matter of soil, and its colloidal nature lets it hold nutrients and water for plants.

Hilly terrain, economic backwardness and a sizeable tribal population are criteria; the strategic factor is location along international borders, not a coastal zone.

Vermicompost is a nutrient-rich organic manure and crop rotation helps control pests and weeds, but organic farming does use biofertilizers and bio-pesticides.

The Tenth Schedule covers nominated members too, but its merger exception protects a member who refuses a merger and sits as a separate group.

Karel Havlicek, the First Deputy Prime Minister and Minister of Industry and Trade of the Czech Republic, is in India on a four-day visit during which he is meeting ministries, trade bodies and businesses, and his itinerary includes visits to industrial units in these two cities.

The correct answer is the India-Czech Joint Defence Committee, named in the talks as the mechanism through which the two sides would take their defence industrial engagement further.

Rajnath Singh met Karel Havlicek, who is the First Deputy Prime Minister as well as the Minister of Industry and Trade of the Czech Republic, in New Delhi, and the two reviewed the entire range of defence industrial cooperation between their countries.

Lipases split fats into fatty acids and glycerol. Fat digestion happens mainly in the small intestine.

Bauxite is a mixture of hydrated aluminium oxides and hydroxides, not a silicate, and it is the main ore of aluminium.

A single-celled organism has no organs at all; the one cell takes in food through its surface or by forming temporary structures.

A healthy young human ear can hear sounds with frequencies from about 20 hertz to about 20,000 hertz. Frequency is the number of vibrations per second, measured in hertz, and our ears sense it as pitch.

A muscle contracts when calcium ions are released from the sarcoplasmic reticulum, and it relaxes when they are pumped back into it.

The bombs thrown in the Central Legislative Assembly were meant to make a noise and be heard, not to kill anyone.

Tropolone is aromatic, but its seven-membered ring is made only of carbon atoms, so it is not heterocyclic. A heterocyclic compound has at least one atom other than carbon, such as oxygen, sulphur or nitrogen, inside its ring.

Breaking down carbohydrates to release energy is respiration, which happens in the cytoplasm and mitochondria, not a job of chlorophyll.

Biogas is mostly methane, with carbon dioxide as the second gas and only small amounts of nitrogen and others. Biogas forms when cattle dung, kitchen waste or crop residue is broken down by anaerobic bacteria, that is, without air, inside a digester.