GENERAL SCIENCE QUIZ FOR SSC & RAILWAY 2018(Part-1)

Creepers: Plants with weak stem that cannot stand upright and spread on the ground are called creepers. Examples: Pumpkin, Watermelon, sweet potato, etc.

Herbs: Herbs are small plants which have soft stem. Examples: Wheat, paddy, cabbage, grass, coriander, etc.

Shrubs: These are bushy and medium- sized plants and they are somewhat bigger than herbs. Their branches start from just above the ground. Examples: Lemon, Coriander, Henna, Rose, etc

Climber: Plants with weak stem that needs support is called climber. Examples: Grapevine, money-plant, cucumber, bean, etc.

Pacemaker :- It is a device placed in the chest or abdomen to help control abnormal heart beat. This device uses electrical pulses to prompt the heart to beat at a normal rate

Haemoglobin (Hb) is a protein found in the red blood cells that carries oxygen in your body and gives blood its red colour.

Cations can be formed from metal elements, as well as non metal elements. If a metal element forms an ion, it always forms a cation.

Nonmetal elements, like nitrogen, oxygen, and hydrogen, are capable of forming anion &cations as well.

Smog is a combination of smoke and fog. It is composed mainly of tropospheric ozone (O3); primary particulate matter such as pollen and dust; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NO2) and ammonia gas.

Galvanization:- applying a protective zinc coating to steel or iron, to prevent rusting.

Dry Ice is the common name for solid carbon dioxide (CO2). Dry ice does not melt into a liquid when heated; instead, it changes directly into a gas (This process is known as sublimation).

A photometer is an instrument that measures light intensity or the optical properties of solutions or surfaces.

A pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface.

A psychrometer measures the relative humidity in the atmosphere through the use of two thermometers

A pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface from a distance.

A thermocouple (two dissimilar electrical conductors forming electrical junctions at differing temperatures )produces a temperature-dependent voltage as a result of the thermoelectric effect, and this voltage can be interpreted to measure temperature.

A thermistor is a type of resistor whose resistance is dependent on temperature. Measure limited temperature range, between −90 °C to 130 °C.

Thermal conductivity is the property of a material to conduct heat. Heat transfer occurs at a lower rate across materials of low thermal conductivity than across materials of high thermal conductivity.