General Science Mixed Practice — MCQs with Answers (Set 5)

Most chicken breeds have four toes per foot, though some breeds like Silkies have five.

Buffalo provides milk, leather, and butter, while horses serve both transport and, in some contexts, meat purposes.

Bovine, ovine, caprine, and equine match buffalo, sheep, goat, and horse respectively as their standard zoological classifications.

Pigs convert feed into meat more efficiently than most other livestock, making them economically favourable for meat production.

The Bactrian camel has two humps and a thick coat, adapted for colder climates, unlike the single-humped dromedary.

The camel earns this nickname for its ability to traverse deserts, much like a ship crosses open water.

Sunandini is a cross breed developed in Kerala, unlike the purebred indigenous Ongole, Tharparkar, and Kangayam.

Jamunapari is a prominent Indian goat breed valued for both meat and its large size.

The mission was launched in December 2014 to protect and develop indigenous cattle breeds. Its aim is breed conservation and improvement.

MOET allows a single superior female to produce many offspring rapidly through multiple embryo transfers.

Eutrophication is an overload of nutrients, often from sewage and effluent. It raises both organic matter production and biological oxygen demand.

That is why sewage-fed lakes like Bellandur turn foul.

Caffeine, nicotine, and theobromine are each the defining alkaloid of coffee, tobacco, and cocoa respectively.

MRI uses magnetic fields and radio waves. It does not use ionizing radiation such as X-rays. It is used to look at tumours, bleeding and blood vessel disease. So all three statements are correct.

The Golden Hour refers to the critical early window for effective treatment after a heart attack or major trauma.

Radon, despite being radioactive and hazardous in homes, has been used in certain cancer radiotherapy applications.

A longer lifespan allows more cumulative genetic mutations to build up, raising cancer risk with age.

The Test and Treat policy aims to immediately start antiretroviral therapy for anyone testing HIV-positive.

Chemical evolution describes the specific stepwise process by which life’s building blocks assembled from simple chemicals.

Early hydrocarbon-rich air gave way over time to an atmosphere dominated more by carbon dioxide, before oxygen later rose.

Blue-green algae (cyanobacteria) rank among Earth’s oldest known life forms, dating back billions of years.