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Compare LPG and wood as fuels.

The following table explains the difference between LPG and wood: LPG Wood The ignition temperature of LPG is low The ignition... View Article

Atomic radii of fluorine and neon in angstrom unit are respectively given by a) 1.60, 1.60 b) 0.75, 1.60 c) 1.60, 0.72 d) 0.72, 0.72

The correct answer is b) 0.75, 1.60 To know more about this answer let us know first what is the atomic radius Atomic radius or... View Article

What are differences between colloid and suspension on the basis of characteristics

The following table explains the difference between suspension and colloid: Suspension Colloid The solution is homogeneous The... View Article

What is the advantage of fractional distillation over simple distillation?

The main difference between fractional distillation and simple distillation is their uses. Fractional distillation is used for separating the... View Article

Which of the following is true about rusting?

Which of the following is true about rusting? rusting will take place in absence of water rusting will not take place in the presence of... View Article

What happens when benzamide is treated with POCl3?

Benzamide on treatment with POCl<sub>3</sub> gives benzonitrile.... View Article

Among halogens, the correct order of amount of energy released in electron gain is?

Among halogens, the correct order of amount of energy released in electron gain is? F>Cl>Br>I F<Cl>Br>I F>Br>Cl>I... View Article

1. Ventilation in room is due to (a) conduction (b) convection (c) radiation (d) all of these 2. which of the following is a good conductor of heat? (a) rubber (b) wood (c) iron (d) plastic 3. if the given solution does not change the colour of litmus paper, it is_ (a) an acid (b) a base (c) a neutral (d) none of these 4. An acid reacts with a base to produce_ (a) acid (b) base (c) salt (d) salt and water 5. fruits such as oranges, lemons, etc.contain__________ acid. (a) citric (b) lactric (c) ascorbic (d) acetic

1.(b) convection 2.(c) iron 3.(c) a neutral 4.(d) salt and water 5.(a) citric... View Article

Based on electron affinity predict whether BF3 is ionic or covalent

Boron trifluoride (BF3) is a covalent compound.... View Article

Name two constituents of baking powder?

The two constituents of banking powder are sodium hydrogen carbonate and tartaric acid.... View Article

write the mechanism of hydration of ethene to yield ethanol

The mechanism of hydration of ethene to yield ethanol is: (1) The electrophilic attack of H30+ hydronium ion protonates ethene to form a... View Article

At absolute zero si acts as (a) non-metal (b) metal (c) insulator (d) semiconductor

Option (c) insulator... View Article

The molecule having smallest bond angle is a) PCl3 b) ACl3 c) NCl3 d) SbCl3

Option d) SbCl3... View Article

How is the concentration of hydronium ions affected when a solution of an acid is diluted

The concentration of hydronium ions decreases when acid is diluted. Upon adding water, the H+ ions of the acid and hydroxyl ions of water react... View Article

Define Latent Heat of Fusion

The latent heat of fusion of a solid is the quantity of heat in joules required to convert 1 kilogram of the solid (at its melting point) to... View Article

Nucleons are

(a) neutrons and electrons (b) Protons and neutrons (c) Protons and electrons (d) Protons, electrons and neutrons Nucleons are protons and... View Article

What is gold number

The minimum amount of protective colloid in mg which is just sufficient to prevent the coagulation of 10 ml of given gold solution when 1 ml of... View Article

BOD stands for

BOD stands for Biochemical Oxygen Demand. The amount of oxygen required by bacteria to break down the organic matter present in a certain volume... View Article

Rutherford scattering experiment is related to the size of the

Rutherford scattering experiment is related to the size of the nucleus.... View Article

IUPAC name of CH3COOH is

IUPAC name of CH3COOH is Ethanoic acid.... View Article

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