SSC CGL Previous Year Questions: General Science - 17 - SSC CGL MCQ

Cardiac muscle is an involuntary striated muscle tissue found only in the organ heart. Involuntary muscles are smooth muscles that are not directly controllable at will. For example You don't have to remind yourself to make your heart beat, so it is involuntary. Voluntary muscles are controllable like those found in arms, legs, hands, etc.

Soil salinity are measured by passing an electric current between the two electrodes of a Conductivity meter (salinity meter) in a sample of soil.

Ringworm is common disease, especially among children. It is caused by a fungus, not a worm like the name suggests. It is a common and highly infectious skin infection that causes a ring-like red rash on the skin

Chickenpox is caused by the varicella-zoster virus. Variola virus is the causative organism of smallpox. 

Instruments can be shielded from outside magnetic effects by surrounding them with iron shield, generally of high permeability

Marble, chalk and limestone are all carbonates of calcium, whereas slaked lime is calcium hydroxide.

Centrifugal force is an example of a pseudo-force, that is, an apparent force to someone whose frame of reference is not at rest or moving with a constant velocity. In the case of centrifugal force, the frame of reference is rotating.

Pascal’s law states that increase in pressure at a point in the enclosed liquid in equilibrium is transmitted equally in all directions in liquid and to the walls of the container. hydraulic brakes works on this principle.

Organic reaction used to convert a primary amide to a primary amine is known as the Hofmann rearrangement.

An antacid is a substance which neutralizes stomach acidity.

Annealing is the process by which both metal and glass are treated with heat in order to change their properties.

Denatured ethanol is chemically ethanol in which substances are added to make it unfit for drinking by way of making it bad-tasting, foul-smelling etc.

For removal of phenol from the contaminated water the polymeric adsorption is involved. In this process, the molecules of the contaminant are retained on the surface of the adsorbent material and then can be separated from the water.

The stability of a pond ecosystem like any ecosystem depends mainly on the producers and consumers.

Sonic boom or supersonic boom is a common name for the loud noise that is created by the ‘shock wave’ produced by the supersonic planes.

This is because the scattering in red light is less than that of yellow colour. The longest visible wavelength is red and the shortest is violet. The wavelength of red light is more than yellow light.

Ex-situ conservation is the process of protecting an endangered species of plant or animal outside of its natural habitat. Zoos and botanical gardens are the most conventional methods of ex-situ conservation. Endangered plants may also be preserved in part through seed banks or germplasm banks.

Diatom ooze (formed from microscopic unicellular algae having cell walls consisting of or resembling silica) is the most widespread deposit in the high southern latitudes.

Photosynthetic Chromatophores vesicles found in some purple bacteria constitute one of the simplest light-harvesting systems in nature.

Convex mirrors reflect light outwards; therefore they are not used to focus light. So, the convex mirror has a wide field of view and hence is used as rear view mirror as it gives a clear diminished and an erect image of the vehicle that is behind.

Saffron, a spice derived from the dried stigmas of the saffron crocus a small plant about a foot tall. Each flower has three female parts (stigmas) two male parts (stamens), each stigmas is red or dark red in color towards the top and yellow towards the bottom of the stigma, where it is attached to the flower.

Suspended colloidal particles in water are a major concern in pollution control. These particles can be removed by the process of coagulation. In this process the destabilization of colloidal particles takes place by addition of chemical reagents (coagulants).

Graves’ disease is caused due to hyperthyroidism, that is overproduction of thyroid hormones . Although a number of disorders may result in hyperthyroidism, this disease is generally caused by the disorder of the immune system.

The thermal decomposition of zinc carbonate gives rise to zinc oxide and carbon dioxide. The carbon dioxide produced during the process turns lime water milky. The residue is Zinc oxide which changes its colour from yellow to white on cooling.

Among the given coagulants, Aluminum Chloride is the strongest. Due to its high efficiency and effectiveness in clarification it is used as preferred coagulant for many industrial and wastewater treatment applications.

Polarization is only exhibited by light waves and not by the sound waves.

For removal of iron and manganese present in water as impurities, the method that is generally used is oxidation and /or filtration. In special cases adsorbing to ion exchange resins can be introduced as an additional step.

Diastase is obtained from Red gram.

Three fourth of the substance will decay in 8 months.

Chiropterophily is the term used for pollination of flowers with help of bats.