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Question 1770

Ramsar Convention is for the conservation of:

AMountain

BGrassland

CForest

DWetland

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D. WetlandThe Ramsar Convention is an international treaty for the conservation and sustainable use of wetlands. Signed in 1971 at Ramsar, Iran, it aims to preserve wetlands as habitats for biodiversity, especially for migratory birds. It promotes wise use of wetland ecosystems through local and national actions. Mountain: Conserved under other ecological programs.Grassland: Managed under terrestrial biodiversity initiatives.Forest: Covered under the UN Forest Forum, not Ramsar.

Question 1769

Ocean thermal energy is due to:

Atides in the ocean

Bpressure difference at different levels in the ocean

Ctemperature difference at different levels in the ocean

Denergy stored by waves in the ocean

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C. temperature difference at different levels in the oceanOcean Thermal Energy (OTE) is produced due to the temperature difference at different levels in the ocean. The surface water is warmer because it absorbs sunlight, while the deeper layers remain cold. This temperature gradient is used to run a heat engine that generates electricity — a process known as Ocean Thermal Energy Conversion (OTEC). Tides: Related to gravitational pull, not temperature.Pressure difference: Exists but not used for energy generation.Waves: Used in wave energy systems, not OTEC.

Question 1768

In India principal wheat producing States are :

APunjab, Bihar, Nagaland and Arunachal Pradesh

BUttar Pradesh, Bihar, Kerala and Madhya Pradesh

CUttar Pradesh, Punjab, Haryana and Madhya Pradesh

DRajasthan, Gujarat, Maharashtra and Kerala.

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C. Uttar Pradesh, Punjab, Haryana and Madhya PradeshExplanation not yet available.

Question 1767

Which of the following compounds is used in fire extinguishers ?

ASodium carbonate

BSodium bicarbonate

CSodium nitrate

DSodium sulphate

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B. Sodium bicarbonateSodium bicarbonate (NaHCO₃), also known as baking soda, is used in fire extinguishers. When heated, it decomposes to produce carbon dioxide (CO₂), which displaces oxygen and helps smother the fire. It is especially effective for extinguishing electrical and small grease fires. Sodium carbonate: Used in glass and soap making, not for fire control.Sodium nitrate: An oxidizing agent, not suitable for extinguishing fires.Sodium sulphate: Used in detergents and paper making, not in fire extinguishers.

Question 1766

Which of the following is the largest ecological unit ?

AOrganism

BPopulation

CBiome

DEcosystem

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C. BiomeThe Biome is the largest ecological unit. It includes several ecosystems that share similar climate, vegetation, and animal life. Examples include tundra, desert, rainforest, and grassland. A biome represents a major community of living organisms adapted to a specific environment over large geographical areas. Organism: An individual living being.Population: A group of the same species living in an area.Ecosystem: Includes both living and non-living components, but multiple ecosystems together form a biome.

Question 1765

A fuse wire has :

Ahigh resistance and high melting point

Blow resistance and high melting point

Clow resistance and low melting point

Dhigh resistance and low melting point

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D. high resistance and low melting pointA fuse wire has high resistance and a low melting point. It is made of materials like tin-lead alloy so that it melts quickly when excessive current flows through the circuit. This breaks the circuit and prevents damage to electrical appliances due to overheating or short circuits. High resistance: Causes heating when excess current passes.Low melting point: Ensures the fuse melts easily to interrupt the circuit.

Question 1764

In a society the growth and development that meets the current human needs and also conserves natural resources for future generations is known as:

AGreen economy

BHolistic development

CSustainable development

DSubsistence agriculture

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C. Sustainable developmentSustainable Development refers to growth that meets the needs of the present without compromising the ability of future generations to meet their own needs. It aims to balance economic progress, social equity, and environmental protection by conserving natural resources and reducing pollution for long-term ecological stability. Green economy: Focuses mainly on eco-friendly industries.Holistic development: Emphasizes overall human and social growth.Subsistence agriculture: Involves farming mainly for self-consumption.

Question 1763

A rocket functions on which of the following laws ?

ANewtons first law

BNewtons second law

CNewtons third law

DAll of the above

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C. Newtons third lawA rocket functions based on Newton’s Third Law of Motion, which states that “for every action, there is an equal and opposite reaction.” The rocket expels gases downward at high speed (action), and in response, the rocket is propelled upward (reaction). This principle enables space rockets to move even in the vacuum of space where no air resistance exists. Newton’s First Law: Deals with inertia, not propulsion.Newton’s Second Law: Explains force and acceleration but doesn’t directly describe rocket thrust.

Question 1762

Green Revolution is associated with:

AAgriculture

BSericulture

CFishery

DCultivation of bees

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A. AgricultureThe Green Revolution is associated with Agriculture. It refers to the period during the 1960s–70s when new technologies like high-yield variety (HYV) seeds, fertilizers, irrigation, and pesticides were introduced to boost food grain production, especially wheat and rice. It helped India achieve self-sufficiency in food production. Sericulture: Rearing of silkworms for silk.Fishery: Cultivation and harvesting of fish.Cultivation of bees: Known as apiculture, for honey production.

Question 1761

Which of the following is an anaesthetic gas ?

ANitrogen dioxide

BNitrous oxide

CNitric oxide

DNitrogen

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B. Nitrous oxideNitrous oxide (N₂O) is an anaesthetic gas, commonly known as laughing gas. It is used in dentistry and minor surgeries to induce mild anesthesia and relaxation. It acts quickly and wears off rapidly, making it safe for short medical procedures. Nitrogen dioxide: A toxic air pollutant, not used as anesthesia.Nitric oxide: A signaling molecule in the body, not an anesthetic.Nitrogen: An inert gas, does not induce anesthesia.

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Explore the question bank

Ramsar Convention is for the conservation of:

Ocean thermal energy is due to:

In India principal wheat producing States are :

Which of the following compounds is used in fire extinguishers ?

Which of the following is the largest ecological unit ?

A fuse wire has :

In a society the growth and development that meets the current human needs and also conserves natural resources for future generations is known as:

A rocket functions on which of the following laws ?

Green Revolution is associated with:

Which of the following is an anaesthetic gas ?

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