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The main source of heat is a) Electricity b) The stars c) The sun d) None of the option

Option c) The sun. The Sun is the star located at the center of the Solar System. Sun is a nearly perfect sphere-shaped hot plasma.... View Article

Dacron is a polymer of a) glycol and phenol b) glycol and terephthalic acid c) glycol and formaldehyde d) glycol and phthalic acid

Option b) glycol and terephthalic acid.... View Article

An extinct bird of mauritius is the a) Peacock b) Dodo c) Turkey d) Parrot

Option b) Dodo. The dodo (Raphus cucullatus) is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the... View Article

Gestation period in human beings is about a) 26 weeks b) 28 weeks c) 31 weeks d) 40 weeks

Option d) 40 weeks. The average length of human gestation is 280 days or 40 weeks, starting from the first day of the woman's last menstrual period.... View Article

PESTLE stands for a) Political, European, Sociological, Technological, Legal and Environmental b) Public, Environmental, Sociological, Technological, Legal, and Environmental c) Political, Economic, Sociological, Technological, Legal and Environmental d) Public, Environmental, Secured, Technological, Legal and Enterprises

Option c) Political, Economic, Sociological, Technological, Legal and Environmental.... View Article

Respiratory organ present in spider is a) Skin b) Gills c) Book Lungs d) None of the option

Option c) Book Lungs. Book lung is found in scorpions and spiders. It is the respiration organ used for atmospheric gas exchange.... View Article

Azane is IUPAC name of : a) Sulfuric acid b) Carbon dioxide c) Quick lime d) Ammonia

Option d) Ammonia. Azane is acyclic, saturated hydro-nitrogen, which means it consists of nitrogen and hydrogen atoms only attached by single... View Article

Write opposite process of evaporation

Condensation is the opposite process of evaporation. In the condensation process, liquid water is formed from water vapor by cooling. Change of... View Article

List two limitations of the green revolution in india

Limitations of Green Revolution are:<ul><li>The poor farmers could not afford High Yield Variety seed... View Article

How many surfaces in solid cylinder? a) 4 b) 2 c) 1 d) 3

Option d) 3. The Front, Top, and bottom are the three surfaces in a solid cylinder.... View Article

What is the significance of vacuole in a plant cell

Vacuoles are membrane-bound sacs within the cytoplasm of a plant cell. Vacuoles in a plant cell aid in providing structural support, as well as... View Article

Evaluate 42²

=1764... View Article

Hydrometer is based on the principle of a) principle of superposition b) Archimede’s principle c) principle of momentum d) Hamilton’s principle

Option b) Archimede's principle. A hydrometer is a device used to find the specific gravity. Archimedes' principle states that weight lost by the... View Article

What is the composition of alpha particles a) A stream of neutrons b) Negatively charged particle c) Positively charged particle d) None of the option

Option c) Positively charged particle. Alpha particle is a positively charged particle, identical to the nucleus of the helium-4 atom. It is... View Article

Grapevine’ refers to a term used in relation to _________. a) Informal communication b)Formal communication c) Both formal and informal communications d) None of the option

Option a) Informal communication. Informal communication is also known as grapevine communication. It is defined as communication between... View Article

Ocelli or fenestrae of cockroach take part in a) Perception of humidity b) Perception of temperature c) Perception of light d) Sight

Option c) Perception of light. Ocelli or fenestrae of cockroaches are responsible for the detection of light. They are circular areas present on... View Article

When light is refracted from air into glass a) Its wavelength increase but frequency remain unchanged b) Its wavelength and frequency both decrease c) Its wavelength decrease but frequency remain unchanged d) Its wavelength and frequency both increase

Option c) Its wavelength decrease but frequency remain unchanged.... View Article

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