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Diffusion pressure deficit is the amount by which two solutions differ in their (1) T.P(2) O.P(3) D.P(4) W.P

Answer: (3) Diffusion Pressure Deficit (DPD) is the proportion by which the diffusion pressure varies between two solutions. This is... View Article

Write the H.C.F of the smallest composite number and the smallest prime number.

Answer: Let us consider the smallest composite number and smallest prime number Smallest composite number = 4 Smallest prime number = 2 Hight... View Article

Blood bank in human body is(1) Spleen(2) Lungs(3) Heart(4) Liver

Answer: (1) Spleen is known as a blood bank in the human body. Spleen important for blood purification and urgent storage of blood cells, as in... View Article

A solution of a substance ‘X’ is used for white washing.(1) Name the substance ‘X’ and write its formula.(2) Write the reaction of the substance ‘X’ named in (1) above with water.

Answer: (1) The solution of the substance used for whitewashing is calcium oxide also called quicklime with chemical formula CaO. Quicklime is... View Article

Define absorptive and holozoic nutrition

Answer: Absorptive Nutrition - A type of nutrition in which an organism obtains its food through absorption. It is a way for organisms to take... View Article

Define stopping potential (cut-off potential) with reference to photoelectric effect.

Answer: Stopping potential or cut-off potential is defined as the required potential for stopping the removal of an electron from a metal... View Article

Second and third most abundant metal in earth’s crust(1) Aluminum, Calcium(2) Iron, Silver(3) Iron, Calcium(4) None

Answer: (3) The most abundant metals are 8.1% of aluminium, 5.0% of iron and 3.6% of calcium, followed closely by Na, K, Mg and Ti.... View Article

Prove that : 4-5 square root of 3 is irrational.

Answer: Let us assume 4 - 5√3 be a rational number. ⇒ 4 - 5√3 = a/b Where a, b are integers and b ≠ 0. ⇒ - 5√3 = a/b -4 ⇒ √3 = 4/5 - a LHS... View Article

What are anionic detergents? Give an example.

Answer: Anionic detergent is a synthetic detergent in which a lipophilic hydrocarbon group of the molecule is an anion. A detergent molecule... View Article

What is venation? Give its types.

Answer: The process of vein formation on the leaf is known as venation. The two types of venation are Reticulate venation Parallel... View Article

Producer gas is a mixture of (1) CO + H2 (2) H2 + CH4 (3) CO + N2 + H2 (4) CO + H2O

Answer: (3) CO + N2 + H2 Unlike natural gas, producer gas is fuel gas that is made from material such as coal. A combustible mixture of... View Article

The refractive index of water with respect to air is 1.33. The refractive index of air with respect to water will be(1) 0.25(2) 0.50(3) 1.00(4) 0.75

Answer: (4) Refractive index is defined as the ratio of the speed of light in a vacuum to its speed in a specific medium. Given parameter The... View Article

Write the molecular formula of novestrol.

Answer: The molecular formula of novestrol is C20H24O2. Novestrol is also known as Ethinylestradiol it is an estrogen drug which is commonly... View Article

In a simple pendulum experiment for determination of acceleration due to gravity (g), time taken for 20 oscillations is measured by using a watch of 1 second least count. The mean value of time taken comes out to be 30s. The length of pendulum is measured by using a meter scale of least count 1mm and the value obtained is 55.0cm. The percentage error in the determination of g is close to (1) 0.7%(2) 0.2%(3) 3.5%(4) 6.8%

Answer: (4) Given parameters The formula for the acceleration due to gravity is where l = 55cm T = 30 sec/20 Δl = 1mm = 0.1cm ΔT =... View Article

Biogas is a mixture of(1) Oxygen, carbon dioxide, methane(2) Nitrogen and oxygen(3) Methane, nitrogen and hydrogen(4) None of these.

Answer:(1) Biogas is mainly methane and carbon dioxide and may have minor quantities of sulphide hydrogen, oxygen, and siloxane. Methane,... View Article

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