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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, and Earth is the third nearest... View Article

Mention any two limitations of dimensional analysis.

Answer: 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 the purest form of iron.... 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 to it.... 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 in their functions.... 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. The instruments have a... 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 a given substance when... 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. So the total valency of O2 = 4... View Article

Evolution and classification of organisms are interlinked.” Give reasons to justify this statement.

Answer: Organism classification is based on the relative similarities and differences between the species. Resemblances of humans are due to the... View Article

What is the energy band gap of silicon and germanium respectively in eV ?(1) 1.1, 0.7(2) 0.7,1.1(3) -o.7,-1.1(4) -1.1, -0.7

Answer:(1) A bandgap (energy band) is an energy range in a solid where there is no presence of any electron states. It is the difference in the... View Article

The father of botany is

Answer: (3) Theophrastus is known as the father of Botany. Aristotle is known as the father of biology and zoology.... View Article

Write the full form of BOD.

Answer: The Full form of BOD is Biochemical Oxygen Demand. The amount of oxygen needed by biological organisms such as bacteria in a given water... View Article

The largest 4-digit and smallest 4-digit numbers formed by using the digits 4,0,3,7 each only once respectively are(1) 4370, 4307(2) 3740, 3047(3) 7403, 3704 (4) 7430, 3047

Answer: (4) 7430, 3047 We have the numbers 4, 0, 3, and 7 here. The largest and lowest numbers must be found. Let's start with the greatest... View Article

What is the IUPAC name for CH3CHO?

Answer: Here aldehyde is the functional group (CHO). There are two carbon atoms, four hydrogens and one oxygen atom in the given compound ∴... View Article

Aqua regia is a mixture of

Answer: Aqua regia is a yellow-orange or sometimes red colour fuming liquid. Aqua regia is a mixture of nitric acid and hydrochloric acid, at a... View Article

Scientific name of human is

Answer: Homo sapiens is the scientific name of the human. Homo is a Genus name and Species is a Sapiens name. Carl Linnaeus termed the binomial... View Article

Climacteric fruit is the one which shows(1) Autochory(2) High respiratory activity at ripening(3) Sudden change in colour and taste at ripening(4) Both 2 and 3

Answer: (4) The biochemical mechanism involved is that climatic fruits release significant amounts of ethylene gas and after-ripening process... View Article

Write the smallest natural number. Can you write the largest natural number?

Answer: The smallest natural number is 1. It is not possible to write the greatest natural number because natural numbers go up to infinity.... View Article

What is the chemical formula of feldspar?

Answer: The chemical formula of feldspar is KAlSi3O8 or NaAlSiO3 or CaAl2Si2O8. Feldspar is the most important mineral-forming rock and... View Article

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