Who is regarded as father of modern chemistry?
Answer: Antoine Lavoisier Antoine Lavoisier is French chemist and born in Paris on 26 August 1743. His significant contributions to the... View Article
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What are decomposers? Name any two of them. What do they do in the forest?
Answer: Decomposers are micro-organisms that digest things that are dead or decaying and turn the dead plants and animals into... View Article
What is jhoom farming?
Answer: The word Jhum (Jhoom) or Podu refers to shifting or slash and burn cultivation. It is one of the... View Article
Why are most carbon compounds poor conductors of electricity?
Answer: Carbon compounds are poor electrical conductors because they form covalent bonds, and they do not give rise to free... View Article
What is fym?
Answer: Farmyard Manure (FYM)is primarily made from cow dung, cow urine, waste grass, and other dairy waste. Properties of FYM... View Article
Velocity of sound is maximum in(1) Water(2) Oil(3) air(4) iron
Answer: (4) The velocity of the sound varies in the different medium as given below. Sound travels in solids at... View Article
What is charge to mass ratio of proton and alpha particles ?
Answer: Twice Alpha particle is a helium nucleus that comprises two protons and two neutrons, and the charge is twice... View Article
Sound waves cannot travel through(1) Solids(2) Liquids(3) Gases(4) Vacuum
Answer: (4) Sound can not travel in a vacuum. A vacuum is an environment where liquids, gases, or solids of... View Article
The edible dry fruit ‘chilgoza’ is(1) Fruit of Cycas(2) Fruit of Pinus gerardiana(3) Seed of Cycas(4) Seed of Pinus gerardiana
Answer: (4) Some species seeds are edible for example Pinus gerardiana (chilgoza pine). This plant is popular in the North... View Article
What does EPI stands for?
Answer: In 1974 WHO founded the Extended Immunization Program (EPI) to improve and extend immunization programs worldwide. The goal was... View Article
Where are proteins synthesised inside the cell?
Answer: Proteins are synthesised by ribosomes which are RNA protein complexes. Explanation Proteins are produced in RER (Rough Endoplasmic Reticulum). Proteins are produced in the... View Article
Which is the nearest planet to the sun(1) Venus(2) Jupiter(3) Mercury(4) Mars
Answer: (3) Mercury is the nearest planet to the Sun. And then Venus is the second nearest planet to the Sun,... View Article
Mention any two limitations of dimensional analysis.
Answer: Definition Dimensional analysis is the practice of checking relations between physical quantities by identifying the dimensions of the physical... View Article
Purest form of iron is(1) Pig iron(2) Wrought iron(3) Cast iron(4) Steel
Answer: (2) Wrought iron Wrought iron is the purest form of iron. It contains 0.12 to 0.25% carbon and is thus... View Article
Write general characters of Balanoglossus.
Answer: General characters of Balanoglossus are Balanoglossus is a worm similar to Protochordate. It belongs to the Phylum: Chordata Subphylum:... View Article
Where are protein synthesised inside the cell?
Answer: Ribosomes Proteins are produced in RER (Rough Endoplasmic Reticulum). Proteins are produced in the RER by the ribosomes attached... View Article
Homologous organs have (1) Same origin and same function(2) Same origine and different function.(3) Different origin and same function.(4) Different origin and different function.
Answer: (2) Homologous organs are defined as the organs of different animals that are having a similar structure but differ... View Article
Least count of a vernier calliper is 0.01cm. When the two jaws of the instrument touch each other the 5thdivision of the vernier scale coincides with a main scale division and the zero of the vernier scale lies to the left of the zero of the main scale. Furthermore while measuring the diameter of a sphere, the zero mark of the vernier scale lies between 2.4cm and 2.5cm and the 6thVernier division coincides with a main scale division. Calculate the diameter of the sphere.(1) 2.51cm (2) 5.12cm (3) 2.51mm (4) 5.12mm.
Answer: (1) Given parameters Least count = 0.01cm Main scale reading (MSR) = 2.4cm Vernier scale divisions (VSD) = 6.... View Article
Differentiate between molarity and molality of a solution. How can we change the molality value of a solution into molarity value?
Answer: Concentration is a basic term used in chemistry. In simple words, concentration is the measure of the quantity of... View Article
What is valency of phosphate ion in AlPO4?
Answer: Valency of phosphorus (P) =5 Valency of Oxygen (O) = 2 In phosphate ion, there is four oxygen atom.... View Article
