Explanation

• The idiom "hit the nail right on the head" broadly means to do or say something that is completely accurate, precise, and perfectly suited for the situation.
• Because it encompasses verbal accuracy, correct actions, and directness.

Last verified on 19-01-2026

Explanation

• Headquarters: Geneva, Switzerland
• UNHCR: United Nations High Commission for Refugees
• Founded: 1950
• Purpose: Protection and assistance of refugees
• Won Nobel Peace Prize: 1954

Last verified on 19-01-2026

Explanation

• Indian National Congress – headed by Bal Gangadhar Tilak
• All-India Muslim League – led by Muhammad Ali Jinnah

Purposes of Lucknow Pact:

• Hindu-Muslim unity
• Congress-League cooperation
• Constitutional reforms
• Separate electorates for Muslims
• Demand for self-government

Last verified on 19-01-2026

Explanation

• In MS-Word 2016, a subscript is a number or letter written slightly below the normal text.
• Commonly used in chemical formulas, mathematical expressions, and scientific writing.
• Example: H₂O → the “2” is a subscript.

Additional information:

• Superscript: Written above the normal text (e.g., x²)

Last verified on 19-01-2026

Explanation

• T & V stands for Training & Visit.
• It is an agricultural extension system used to improve farmers’ skills.
• The system focuses on regular training of extension workers and farm visits.

Additional information:

• Introduced by: World Bank
• Main Purpose: Transfer of modern farming techniques to farmers

Last verified on 19-01-2026

Explanation

• Gypsum (CaSO₄·2H₂O) is widely used to reclaim sodic and saline soils.
• It replaces sodium ions with calcium ions in the soil, improving structure.
• Helps in reducing soil alkalinity and increasing crop productivity.

Additional information:

Other Soil Amendments (4 examples):

1. Lime (CaCO₃) – for acidic soils
2. Sulphur – lowers soil pH
3. Organic manure – improves fertility
4. Compost – enhances soil structure

Last verified on 19-01-2026

Explanation

• The lipid membrane is rigid, providing a protective barrier against chilling and environmental stress.
• Flexible or liquid membranes do not effectively prevent chilling injury.

Additional information:

• The cuticular wax layer contributes to rigidity.
• Helps maintain fruit and vegetable shelf life during storage.

Last verified on 20-01-2026

Explanation

• Waterlogged soils have a massive structure, meaning they form large, hard clods with little visible granular structure.
• This occurs because water pressure compacts soil particles at the surface.

Additional information:

• Massive soils have low permeability and poor aeration.
• Proper drainage and puddling can improve rice yield in such soils.

Last verified on 20-01-2026

Explanation

• Citrus trees in tropical regions are mostly evergreen.
• They retain and grow leaves throughout the year due to consistent warm climate.
• Seasonal changes have minimal effect on their leaf growth.

Additional information:

• Examples of citrus trees: Orange, Lemon, Lime, Grapefruit.
• Evergreen nature helps in continuous photosynthesis and fruit production.

Last verified on 20-01-2026

Explanation

• Nutritive foods supply the body with necessary nutrients for growth, energy, and repair.
• They include all food groups that contribute to balanced nutrition.

Additional information:

• Cereals provide carbohydrates for energy.
• Vegetables and fruits provide vitamins and minerals.
• Meat provides proteins and iron for body-building.

Last verified on 20-01-2026