According to Article 84 of the Indian Constitution, the minimum age to be a member of the Lok Sabha is 25 years.

The number 4 appears most frequently (3 times). Hence, mode = 4.

The order of a matrix is given by the number of rows followed by the number of columns. Therefore, a matrix with 3 rows and 4 columns is of order 3x4.

The perimeter of a rectangle is given by P = 2(length + width). Here, P = 2(10 + 5) = 30 cm.

Perimeter = 2 * (length + width) = 2 * (8 + 3) = 22 units.

Perimeter of a square = 4 × side = 4 × 4 cm = 16 cm.

The bouncing back of sound waves from a surface is called reflection.

Power (P) is calculated as P = V * I. Thus, P = 120 V * 3 A = 360 W.

The primary aim of the NRLM is to promote self-employment and organize the rural poor into self-help groups.

The primary cause of ocean currents is wind patterns, which drive the movement of water across the surface.

Non-metals are generally brittle in solid form and do not exhibit metallic luster.

The cell wall of plant cells is primarily made of cellulose, providing structural support.

The Earth's crust is primarily composed of basalt (oceanic crust) and granite (continental crust).

Latitude is the primary factor that affects climate in a region, as it determines the angle of sunlight received.

All of the above factors affect soil erosion rate.

Temperature is the primary factor that affects the state of matter by influencing particle energy.

The Beti Bachao Beti Padhao scheme focuses on improving the sex ratio and promoting education for girls.

Fats primarily serve as energy storage, providing 9 calories per gram.

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.

The circulatory system is responsible for transporting nutrients, oxygen, and waste products throughout the body.

The primary function of the Election Commission of India is to conduct free and fair elections in the country.

Mitochondria are known as the powerhouse of the cell, where cellular respiration occurs to produce ATP.

Ribosomes are the cellular structures responsible for synthesizing proteins by translating messenger RNA (mRNA).

Seismic waves generated by earthquakes are the primary method used to study the Earth's interior structure.

The Pradhan Mantri Awas Yojana aims to provide affordable housing to the urban poor and ensure housing for all by the year 2022.

The complete combustion of propane produces carbon dioxide (CO2) and water (H2O) as primary products.

The reaction produces sodium chloride, carbon dioxide, and water.

The Earth's magnetic field is primarily generated by the flow of molten iron in the outer core.

The primary source of energy for the Earth's climate system is the Sun.

Carbohydrates are the primary source of energy in a balanced diet, providing 4 calories per gram.