SSC CGL Previous Year Questions: General Science - 5 - SSC CGL MCQ

Anemometer is an instrument for measuring the speed of the wind, or of any current of gas.

The retina of the eye has two types of light-sensitive cells called rods and cones. Both are found in the retina which processes images. Rods work in low light conditions to help night vision, but cones work in daylight and are responsible for colour discrimination.

The vegetable fibres are composed of or cellulose based fibres. These class of fibres are commercially important fibres like cotton, jute etc.

When an object is thrown vertically upwards it started decelerating under the earth’s gravity. Its speed decreases until it attains a maximum height, where the velocity becomes zero. Then it is accelerated uniformly downwards under gravity.

Fermentation is an anaerobic metabolic process and it does not require oxygen in order to occur. During Fermentation of carbohydrates such as starch or sugar, ethyl alcohol (ethanol) or lactic acid is produced generally.

It depends upon waveform produced by the musical sound.

Electrostatic Precipitators are used for removal of pollutants or impurities from air. It functions by electrostatically charging particles in the air. The charged particles are attracted to and deposited on collection plates.

Leaves being green in color reflect green color and therefore is least absorbed during the process of photosynthesis.

Activated Coconut Charcoal acts as best adsorbent among the given choices as it has more surface area for better adsorption.

Green plants account for the maximum fixation of solar energy.

Parsec (symbol: pc) is a unit of length used to measure large distances of objects outside our Solar System.

At standard room temperature mercury (Hg) and bromine (Br) are in liquid state.

Phenol, also known as carbolic acid, is an aromatic organic compound with the molecular formula C₆H₅OH. It is a white crystalline solid that is volatile. The molecule consists of a phenyl group (–C₆H₅) bonded to a hydroxyl group (OH).

Urine of a normal healthy person contains around 0.1% creatinine. It is a by-product of creatinine phosphate in body and released from the body through urine.

It grows larger until puberty and then begins to shrink. The gland produces thymosins, which are hormones that stimulate the development of antibodies.

The Blood group AB has both A and B antigens, but no antibodies. It is therefore known as Universal Acceptor.

Vitamins A,D,E, and K are fat soluble and deposit in body tissues.

During chain reaction , neutrons are released in a repeated process producing enormous energy for atomic power during controlled reaction and atomic explosion in uncontrolled one.

Refraction refers to change in direction of light as a result of its travelling at different speeds due to change in medium.

When water freezes the mobile molecules inside it are forced to assume fixed positions in the ice . This reduces the molecular disorder of the system and therefore decreases the entropy.

Two vectors are said to be equal if both the magnitude and direction are same.

Generally all the viruses contain a protein capsid and nucleic acid genome. The nucleic acid may either DNA or RNA, while capsid functions as envelope to the genome. Both genome and capsid together known as
nucleocapsid.

Lichens can be used as air pollution indicators, especially of the concentration of sulfur dioxide in the atmosphere. Lichens are plants that grow in exposed places such as rocks or tree bark. They need to be very good at absorbing water and nutrients to grow there.

Irrigation salinity is the rise in saline groundwater and the build-up of salt in the soil surface in irrigated areas. It is caused by using large volumes of irrigation water that locally raise groundwater levels and mobilise salt. Irrigation salinity is made worse when water used to irrigate is from salty sources.

Pepsin is one of the enzymes that helps in digestion of proteins. In the stomach, the enzyme breaks down protein into smaller pieces called peptides. These peptides are further digested by a variety of proteases and peptidases in the intestine.

Fermentation is an important step of metabolism which is facilitated in the absence of oxygen. It is also involved in the preparation of wine, alcoholic beverages etc. with the help of microorganisms.

The discovery of the new Heat Shock Protein 90 (HSP90) has the potential for the effective treatment of malaria.

Antigen-presenting cells (APCs) helps in initiation and orchestration of Antigen specific immune responses. These are mainly present in Lymph nodes, spleen and also in skin.

Nucleic acid hybridization or DNA hybridization is used to determine the number of DNA sequences that any two organisms have in common and to estimate the percentage of divergence within DNA sequences that are related but not identical.

Starch is stored in various tissues or specialised plant parts like tubers. Sugasr produced in the green parts like leaves are translocated through phloem and stored in these parts.