Q: PINAKA often seen in news, is a / an:

A: Anti-submarine torpedo and research vehicle

B: Aircraft carrier

C: Multi barrel Rocket Launch (MBRL) system

D: Guided missile frigate submarine warship



Correct Option: C  [ Multi barrel Rocket Launch (MBRL) system ]

Remark:

PINAKA is an indigenously developed Multi Barrel Rocket Launch (MBRL) system designed and produced by the Defence Research and Development Organisation (DRDO) of India. It is capable of firing a salvo of rockets to deliver explosive warheads over large areas with high accuracy. Pinaka is primarily used by the Indian Army for long-range artillery support and has a range of up to 75 km in its upgraded version (Pinaka Mk-II).

Other options (for context)

  • Anti-submarine torpedo and research vehicle: Refers to underwater weapon systems, not related to Pinaka.
  • Aircraft carrier: A large naval vessel capable of carrying aircraft; Pinaka is not a ship.
  • Guided missile frigate submarine warship: Refers to naval warships, not a land-based rocket launcher.


Q: Cuscuta is a :

A: Parasite

B: Saprophyte

C: Epiphyte

D: Xerophyte



Correct Option: A  [ Parasite ]

Remark:

Explanation: Cuscuta, commonly known as dodder plant or amarbel, is a total stem parasite. It lacks chlorophyll and cannot perform photosynthesis. Instead, it attaches itself to the host plant using specialized structures called haustoria that penetrate the host’s vascular tissues to absorb nutrients and water. Cuscuta is usually seen twining around host plants such as lucerne, hedg


Q: Which among the following is respiratory pigment in human beings?

A: Melanin

B: Haemoglobin

C: Rhodopsin

D: Bilirubin



Correct Option: B  [ Haemoglobin ]

Remark:

Explanation: Haemoglobin is a complex iron-containing protein found in red blood cells (RBCs). It binds with oxygen in the lungs to form oxyhaemoglobin and releases it in tissues where oxygen levels are low. It also helps transport carbon dioxide from tissues back to the lungs. This oxygen-carrying property makes haemoglobin the essential respiratory pigment in humans and most vertebrates.


Q: Sound causes hazardous noise pollution at decibels:

A: Above 50

B: Above 80

C: Above 100

D: Above 130



Correct Option: B  [ Above 80 ]

Remark:

Sound becomes hazardous and causes noise pollution when its intensity exceeds 80 decibels (dB). Prolonged exposure to such high noise levels can lead to hearing loss, stress, sleep disturbances, and other health problems. Common sources include heavy traffic, loudspeakers, machinery, and construction activities. Sounds above 120 dB can cause immediate ear damage or pain.

Other options (for context)

  • Above 50 dB: Considered moderate — typical of normal conversation or office noise.
  • Above 100 dB: Very loud and potentially painful, but 80 dB is the threshold for long-term hazard.
  • Above 130 dB: Extremely loud, causes immediate physical pain and ear damage.


Q: Entomology is the science that studies:

A: The origin and history of technical and scientific terms.

B: Insects

C: The formation of Rocks

D: Behavoiur of human beings



Correct Option: B  [ Insects ]

Remark:

Explanation: Entomology is a branch of Zoology that focuses on the study of insects, including their structure, classification, behavior, ecology, and evolution. Insects make up more than 75% of all known animal species on Earth and play crucial roles in pollination, decomposition, and food chains. Scientists who study insects are known as entomologists.


Q: Plants absorb dissolved nitrates from soil and convert them into:

A: free nitrogen

B: urea

C: ammonia

D: proteins



Correct Option: C  [ ammonia ]

Remark:

Explanation: Plants absorb nitrogen from the soil mainly in the form of nitrates (NO₃⁻). Inside the plant, nitrates are reduced to nitrites (NO₂⁻) and then to ammonia (NH₃) through the action of specific reductase enzymes. The ammonia thus formed is then used to synthesize amino acids, proteins, nucleic acids, and other nitrogen-containing compounds necessary for plant growth.

Simplified Pathway:

NO₃⁻ → NO₂⁻ → NH₃ → Amino acids → Proteins


Q: Cobalt-60, commonly used in radiation therapy, emits :

A: Alpha rays

B: Beta rays

C: Gamma rays

D: X-rays



Correct Option: C  [ Gamma rays ]

Remark:

Explanation: Cobalt-60 (Co-60) is a radioactive isotope of cobalt that emits high-energy gamma rays during its decay process. It decays into Nickel-60 (Ni-60) by beta decay, releasing two strong gamma photons of energies 1.17 MeV and 1.33 MeV. Due to these intense gamma emissions, Co-60 is widely used in radiation therapy (teletherapy) for cancer treatment, as well as in industrial radiography and sterilization of medical equipment. Gamma rays have high penetration power, allowing them to destroy cancerous cells deep inside tissues.


Q: Which pigment gives pale yellow color to urine?

A: Erithromycin

B: Amoxylin

C: Urochronie

D: Unicom



Correct Option: C  [ Urochronie ]

Remark:

Explanation: The pale yellow color of normal human urine is due to the presence of a pigment called Urochrome. It is produced from the breakdown of hemoglobin in red blood cells. The intensity of the color depends on the concentration of the urine — darker yellow indicates concentrated urine, while very pale or colorless urine suggests dilution due to high water intake.


Q: In a computer, the parity bit is added for the purpose of:

A: Coding

B: Error detection

C: Controlling

D: Indexing



Correct Option: B  [ Error detection ]

Remark:

Explanation: A parity bit is added to binary data in a computer system for error detection. It helps identify whether data has been altered during transmission or storage. The parity bit makes the total number of 1s either even (even parity) or odd (odd parity), allowing simple error checking.


Q: Lack of Vitamin A may cause

A: Poor night vision

B: Rickets

C: Beri Beri

D: None of these



Correct Option: A  [ Poor night vision ]

Remark:

Explanation: Vitamin A is essential for maintaining healthy vision, skin, and immune function. A deficiency of Vitamin A leads to night blindness (nyctalopia), a condition in which a person has difficulty seeing in dim light or at night. In severe cases, it can cause xerophthalmia (dryness of the cornea) and even blindness. Vitamin A is obtained from foods such as carrots, milk, butter, fish liver oil, and green leafy vegetables.

1...