SSC CGL Previous Year Questions: General Science - 11 - SSC CGL MCQ

A limnic eruption, also referred to as a lake overturn, is a rare type of natural disaster in which dissolved carbon dioxide (CO₂) suddenly erupts from deep lake waters, forming a gas cloud that can suffocate wildlife, livestock and humans.

The inventor of blood group is Karl Landsteiner. He was born in Vienna, June 14, 1868. He was awarded Nobel Prize for Medicine and Physiology in 1930. This is because the classification of all types of blood into four namely; A, B, AB, and O in the year 1909.

Egg yolk is a rich source of fat. In addition it also contains protein.

Blood is a fluid connective tissue.

DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and kills whole cells of the organism that cause pertussis.

Smallpox eradicated by a collaborative global vaccination programme led by the World Health Organization. This deadly disease was officially declared eradicated in 1979.

There are three germ pores in pollen grains of dicots.

Farad is the SI unit of capacitance.

In physics a substance is known as more elastic if it offers greater resistance to deformation than other bodies. Steel requires larger deforming force than rubber, hence it is more elastic.

Among the given alternatives only microwaves are types of electromagnetic radiations

The oxalic acid is an ideal chemical for cleaning purposes. Its bleach-like qualities make it perfect for sterilizing household items. It is also efficient in removing rust on various different surfaces. Stains on counters, bathtubs and kitchen sinks can be removed through careful application of this chemical.

Ammonium sulfate (NH4)2SO4, is an inorganic salt most commonly used as a fertilizer. It contains 21% nitrogen and 24% sulfur.

Rectified spirit, also known as neutral spirits, rectified alcohol, or ethyl alcohol of agricultural origin is highly concentrated ethanol which has been purified by means of repeated distillation, a process that is called rectification. It is 95.5% alcohol and 4.5% water. It is treated with CaO to form lime of alcohol, which undergoes fractional distillation to give ethanol.

progestin (synthetic form of progesterone) and estrogens are commonly used in oral contraceptives to prevent pregnancy.

The Intergovernmental Panel on Climate Change (IPCC) is a scientific and intergovernmental body under the auspices of the United Nations, set up at the request of member governments, dedicated to the task of providing the world with an objective, scientific view of climate change and its political and economic impacts.

According to Central Pollution Control Board, the permissible sound level in residential areas is 55 dB and 45 dB during daytime and night respectively.

Endosulfan spray on cashew crops resulted in the pollution to the tune of tragedy in various regions in Kerala including Kasaragod.

Hypothermia is a medical emergency that occurs when our body loses heat faster than it can produce heat, causing a dangerously low body temperature. Normal body temperature is around 98.6° F (37°C). Hypothermia occurs as our body temperature passes below 95° F (35° C).

Semiconductors are insulators at low temperatures and reasonably good conductors at higher temperatures. As temperature increases, the semi–conductor material becomes a better and better conductor.

Mass of proton is 1.672621777 (74) x 10^–27 kg. An electron has a mass (9.1093829140) x 10^–31 kg) that is approximately 1/1836 that of the proton. The mass of neutron is slightly larger than that of a proton. The mass of the hydrogen nucleus is 1.7 x 10^–27 kg. The heaviest of these particles is the neutron.

A television channel is a physical or virtual channel over which a television station or television network is distributed. Channel numbers represent actual frequencies used to broadcast the television signal. For example, in North America. "Channel 2" refers to the broadcast or cable band of 54 to 60 MHz, with carrier frequencies of 55.25 MHz for NTSC analog video (VSB) and 59.75 MHz for analog audio (FM), or 55.31 MHz for digital ATSC (8VSB).

Water never has an absolute density because its density varies with temperature. Water has its maximum density of lg/cm3 at 4 degrees Celsius. When the temperature changes from either greater or less than 4 degrees, the density will become less than 1 g/cm³.

Photosynthesis is the process by which light energy is converted into chemical energy by organisms. Carbon dioxide and water are the raw materials of this process. The light energy comes from the sun and its end products are oxygen and glucose.

An emulsion is a mixture of two or more liquids that are normally immiscible (nonmixable or unblendable). Emulsions are part of a more general class of two– phase systems of matter called colloids. In an emulsion, one liquid (the dispersed phase) is dispersed in the other (the continuous.

The active ingredient in Dettol that confers its antiseptic property is chloroxylenol (C₈H₉OCl), an aromatic chemical compound. Chloroxylenol comprises 4.8% of Dettol's total mixture, with the rest composed of pine oil, isopropanol, castor oil soap caramel and water.

Researchers in Mangolia and China completed studies to unravel the genomic Peculiarities behind the physiological tricks that camels use to survive in the harshest of conditions. They described the genomes of wild and domesticated Bactrian camels.

Fine particles known as PM₁₀ and PM_2.5 can penetrate deep into the lungs, creating health problems. People with heart or lung diseases, older adults, and children are most likely to have problems because of contact with particle pollution. Short–term exposure to PM among pregnant women has been associated with preterm growth and growth retardation in neonates.

PNG is a mixture consisting mainly methane CH4 with a small percentage of other higher hydrocarbons. The ratio of carbon to hydrogen is least in methane and hence it burns almost completely making it the cleanest fuel. Domestic PNG customers, also known as Residential customers, use gas for cooking purpose and also for heating water through gas geysers.

Green Park Stadium is a 60,000 capacity floodlit multi– purpose stadium located in Kanpur, India, and the home of the Uttar Pradesh cricket team.

According to the Red list of 2012 Ganges River Dolphin is one of critically endangered species in lndia. Endangered species in India comprise large varieties of rare species of wild animals, aquatic animals and insects.