General Science Questions for SSC CGL (with Answers)

Answer: D. Fe

Iron's symbol Fe comes from Latin 'Ferrum'. Ir is iridium and F is fluorine.

Answer: C. Neuron

The neuron, or nerve cell, carries messages as electrical impulses. It is the longest cell in the human body.

Answer: D. Citric acid

Lemons and oranges contain citric acid. Tamarind contains tartaric acid and curd contains lactic acid.

Answer: C. Scurvy

Lack of vitamin C causes scurvy, with bleeding gums. Citrus fruits like amla and oranges are rich in vitamin C.

Answer: B. Nephron

Nephrons filter blood and form urine. Neurons are nerve cells and alveoli are air sacs in the lungs.

Answer: D. Zinc

Galvanisation coats iron or steel with zinc to protect it from rusting. Zinc reacts first, protecting the iron beneath.

Answer: A. Concave lens

Myopia is corrected by a concave (diverging) lens. Hypermetropia is corrected by a convex lens.

Answer: B. Bone marrow

In adults, red blood cells are made in the red bone marrow. Old RBCs are broken down in the spleen and liver.

Answer: A. Cerebellum

The cerebellum coordinates voluntary movements and maintains posture and balance. The cerebrum handles thinking and memory.

Answer: C. Silver

Silver has the highest electrical conductivity of all metals. Copper is used for wiring because it is almost as good and much cheaper.

Answer: A. Atmospheric refraction

Starlight is refracted by the changing layers of Earth's atmosphere, so the star's apparent position and brightness keep changing.

Answer: A. Vitamin K

Vitamin K is needed to make clotting factors such as prothrombin. A lack of vitamin D causes rickets.

Answer: C. Cerebellum

The cerebellum maintains balance and posture and coordinates voluntary movements. The cerebrum controls thinking and memory.

Answer: C. Henry Moseley

Henry Moseley showed that atomic number is the basis for arranging elements. Mendeleev's table used atomic mass, Newlands proposed the Law of Octaves and Döbereiner the triads.