Is the stickiness of oranges in our hands can be easily washed with tap water?

Q: How does the specific heat of water compare with that of various metals? Why?

A: Specific heat can be defined as the amount of heat that is added or release from any substance to…

Q: Chinawares are wrapped in straw or paper before packing. Why?

A: Chinaware are wrapped in straw or paper before packing, as when it falls on ground, the force of…

Q: When wax is coated on clothes , they become water proof. Why?

A: When there is no wax, adhesive force between cloth and water molecules is stronger than the cohesive…

Q: How does the arrangement of atoms in a crystalline substance differ from that in a noncrystalline…

A: Crystalline material In crystals the atoms are neatly stacked in a three dimensional array. The…

Q: two blocks of ice when placed together, combine to form a single piece. explain how this happens?

A: The melting point of ice:

Q: Particles of camphor move around on the surface of water. Why?

A: The surface tension of water decreases when the impurities are dissolved in it. The camphor is…

Q: Would regelation occur if ice crystals did not have an open structure? Explain.

A: The structure of ice is similar to that of water molecules. There exist hydrogen bonds in ice…

Q: Chocolate candy in your hand will eventually melt as the heat from your body is released and makes…

A: This phenomenon is due to Conduction of heat. For detailed explanation see next step.

Q: Does a liquid release energy or absorb energy when it changes into a solid?

A: A process by which a liquid changes to solid is called freezing or solidification.

Q: Two safety pins, identical except that one is latched and one is unlatched, are placed in identical…

A:

Q: When a liquid evaporates

A: When a liquid evaporates,

Q: OI only OIl only IIl only OI and II only 1, Il and III

A: in all three of them i.e (i),(ii) and (iii) ameter is connected correctly

Q: Why is the ice is less dense than liquid water so unusual?

A:

Q: A liquid which is around vaporization state is called: o Saturated liquid o Compressed liquid o…

A: In this question we have to answer what is the liquid called which is around its vaporization state.…

Q: How can water be brought to a boil without heating it?

A: Boiling is the process when liquid phase changes to the gas phase.

Q: When a pressure of 2.0 MPa is applied to a sample of kerosene, it contracts by 0.15%. The value of…

A: Given: Applied pressure, P=2.0 Mpa=2×106 Pa Volume contraction, ∆VV=0.15%=0.15100

Q: What is the difference between a bleach safe for white clothes and those that are considered safe…

A: Given : Asked question : What is the difference between a bleach safe for white clothes and those…

Q: What is meant by the specific gravity of wood?

A: The material’s specific gravity is given as the ratio of the material's density and the water's…

Q: Why do substances expand when temperature is increased?

A:

Q: A match stick can be lighted by rubbing it against a rough surface, Why?

A: Upon the rubbing the match stick, work is converted to heat due to friction. The temperature of the…

Q: A cube of each of the following that measures 2.36cm on a side is brought from 5.7 oC to 28.3 oC…

A: Given: The side of the cube is 2.36 cm. The initial temperature of the cube is 5.7 °C. The final…

Q: Will 5 litres of kerosene oil weigh more in winter or in summer?

A: AnswerIn winter

Q: QlITheproduet of the two influences Choose the answe 4. HBTAt 2/8^ A^

A: It is a property of quantum mechanics.

Q: Discuss the purpose of a layer of copper or aluminum on the bottoms of stainless steel cookware.

A: The cooking utensils are fabricated with a layer of copper or aluminium at the bottom so that the…

Q: Hot water is poured simultaneously in four metallic tumblers painted outside with different paints.…

A: A  perfect black body absorbs the entire wavelength falling on it. That is why they appear black.…

Q: What percentage of an iceburg is below the surface of the water?

A: As we know that:-  Density of ice=0.9gm/ml(approx) Density of water=1gm/ml

Q: When you rub a piece of ebonite (very hard, black rubber) across a piece of animal fur which…

A: On rubbing a piece of material with another we are doing charging by method of friction.  In method…

Q: Tents are coated with thin layer of aluminium hydroxide. Why?

A: Tents are coated with a thin layer of aluminium hydroxide because aluminium hydroxide is insoluble…

Q: Who has more need for drink in a dry desert climate, a child or an adult?

A: The rate at which dissipates heat from an object is directly proportional to the surface area.…

Q: Choose the BEST answer to the following: Microscopic slush in water tends to make the water (a) more…

A: Microscopic slush is a slurry of ice crystals, and its density id less than the water since the…

Q: If you add oil to the water,what will happen?Will it create a single homogeneous phase or will it…

A: When oil is add to a water, oil doesn't mixed with water.

Q: Boiling is a form of evaporation - O True O False

A:

Q: What accounts for the bulged ends of a can of soda that has been frozen?

A: Water is less dense in solid form than in liquid form. Thus water expands on freezing.

Q: Your friend says that the primary difference between a solid and a liquid is the kind of atoms in…

A: No, the basic difference between the solid and liquid is the arrangement of atoms and bonds between…

Q: Water with detergent dissolved in it should have small angles of contact.

A: Let theta be the angle of contact, h be the height of the capillary rise.Write the expression for…

Q: Water can be sprayed easily when soap is added to it, Why?

A: Because addition of soap decreases the surface tension of water. The energy for spraying is…

Q: Why are bottoms so that utensils for cooking food blackened?

A: Why are the bottoms of cooking utensils are blackened?Black color absorbs maximum amount of heat…

Q: Supposed you had a mixture of iron pellets, pebbles, and small wood spheres, all of which were about…

A:

Q: Why do bubbles form inside the bottle of carbonated soda (ex. Sprite) when adequately submerged in a…

A: Why do bubbles form inside the bottle of carbonated soda (ex. Sprite) when adequately submerged in a…

Q: The water equivalent of 5 kg of a substance is 1 kg. Find its specific heat

A:

Q: Birds swell their feather in winter, Why?

A: Birds often swell their feathers in the winter in order to keep themselves warm.

Q: Cooking utensils are provided with wooden handles, Why?

A: Wood is a very poor conductor of heat energy, means that heat energy from cooking pan cannot…

Q: When a chalk piece is immersed in water, bubbles are emitted, why?

A: A piece of chalk has extremely narrow capillaries. As it is immersed in water, water rises due to…

Q: true or false ? is Oxygen is an example of matter .

A: Matter is made from atoms. Every substance has a unique number of protons, neutrons, and electrons.…

Q: What is the effect of increase in pressure on the boiling point of a liquid?

A: When the pressure applied to the liquid surface is increased, the energy needed for the liquid…

Q: If you add salt continuously to a glass of water, eventually some salt will remain at the bottom.…

A: Given Assertion: If we add salt continuously to a glass of water, eventually some salt will remain…

Q: Oil rises in lamp wick, Why?

A: The oil in the wick of an oil lamp rises up due to capillary action. This effect is due to surface…