RRB Group D GK Questions 2026

Mitochondria have their own DNA and their own ribosomes, so they can make some of the proteins they need. Mitochondria are the "powerhouses of the cell", where food is broken down in aerobic respiration to release energy stored as ATP.

Reverberation is the lingering of sound in a closed space caused by many reflections from the walls, ceiling and floor.

The element with atomic number 35 is bromine, whose 35 electrons are arranged as 2, 8, 18, 7, leaving seven in the outermost shell.

A split-ring commutator reverses the coil's connection to the outer circuit every half turn, so the current outside flows in one direction only.

Sponges belong to the phylum Porifera, a name that means "pore bearers", because their bodies are full of tiny pores.

Nitrogen dioxide has an unpaired electron, so two of its molecules join to form dinitrogen tetroxide, N 2 O 4.

Tincture of iodine is a true solution, which is homogeneous, so statement I is wrong, while II and III are right.

The purpose is to strengthen citizen participation and to support efforts to make journeys on national highways safer, smoother and more convenient.

After such a user crosses a national highway toll plaza, the Rajmargyatra app sends a notification inviting the user to share the experience of that plaza.

The National Highways Authority of India has added the Toll Plaza Feedback option to this mobile app so that users of national highways can report their experience at a toll plaza.

Radha Venkatesh finished second in the women's 1500m T12/13 final at the Asian Para Games 2026, and the Prime Minister expressed pride in the achievement, said the country was celebrating her success and wished her many more achievements in the future.

Soumya was appearing at the Asian Para Games for the first time, and the run that won the women's 1500m T12/13 gold medal was also the fastest she had managed over the distance, which is why the Prime Minister's Office described it as a golden debut.

She won the women's 1500m T12/13 title at the Asian Para Games 2026, and she did it on her first appearance at the Games while also running a personal best over the distance.

Ajeet Singh finished second in the men's javelin throw F46 final at the Asian Para Games 2026, and the Prime Minister praised his display of skill and his competitive spirit while wishing him well for the efforts still ahead.

That was the distance of the winning throw in the men's javelin throw F46 competition at the Asian Para Games 2026, and it was also the best mark Rinku Hooda had recorded during the season, so the title and a season best came in the same attempt.

He won the gold medal in the men's javelin throw F46 class at the Asian Para Games 2026, and the throw that won it measured 65.11 metres, the best distance he had produced all season.

Recognising the contribution of sanitation workers, the ministry's organisations conducted 234 Safai Mitra Suraksha Evam Samman Shivir, and 7,098 sanitation workers took part in these camps.

The ministry, its central public sector enterprises and its attached offices took part in the campaign across this fortnight, which began with a pledge-taking ceremony administered by the Secretary (Petroleum and Natural Gas) at Kartavya Bhawan-3 in New Delhi on the opening day and closed on Swachh Bharat Diwas.

Under the first pillar of the Swachhata Hi Seva 2026 campaign, the Ministry of Petroleum and Natural Gas and its organisations transformed 9,845 cleanliness target units, and 99,548 people took part in that effort.

Mona Agarwal’s score in the women’s 10m air rifle standing SH1 event was high enough to establish a fresh Asian Para Games mark in that event, and the record came along with the gold medal on India’s opening day at the Games.