52639 + Interview Questions in Secondary School in Chemistry

1.	Classify any four of the following into intensive properties and extensive propertiesdensity , enthalpy , surface tension , number of moles , viscosity , volume , colour , entorpy
Answer» Answer: EXTENSIVE PROPERTY: A property of a system, whose MAGNITUDE depends upon the amount of matter, is known as extensive property. PROPERTIES like mass, volume, internal energy, heat content, FREE energy, enthalpy, entropy, heat capacity, surface area, energy, etc. are dependent upon the mass of the system and are called extensive properties. INTENSIVE PROPERTY: property of a system, whose magnitude does not depend upon the amount of matter, is known as intensive property. Properties like TEMPERATURE, pressure, surface tension, viscosity, specific heat, molar energy, molar entropy, density, refractive index, etc., are independent of the mass of the system and are called intensive properties. PLEASE FOLLOW ME AND MARKED ME AS BRAINLIST THANKS FOR YOUR QUESTION

1.

Classify any four of the following into intensive properties and extensive propertiesdensity , enthalpy , surface tension , number of moles , viscosity , volume , colour , entorpy

Answer»

Answer:

EXTENSIVE PROPERTY:

A property of a system, whose MAGNITUDE depends upon the amount of matter, is known as extensive property. PROPERTIES like mass, volume, internal energy, heat content, FREE energy, enthalpy, entropy, heat capacity, surface area, energy, etc. are dependent upon the mass of the system and are called extensive properties.

INTENSIVE PROPERTY:

property of a system, whose magnitude does not depend upon the amount of matter, is known as intensive property. Properties like TEMPERATURE, pressure, surface tension, viscosity, specific heat, molar energy, molar entropy, density, refractive index, etc., are independent of the mass of the system and are called intensive properties.

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28.	At a pressure of 700mm of mercury a fixed mass of a gas occupies a volume of 75 litres. What pressure must be maintained if the volume is to be increased to 100 litres, temperatureremaining constant? (3)
Answer» Melguhv JOSH igykv gijj gukngy CT jjbxf IONG y uiiiiiiiiiiiiiii8iiiiiiiiiiii88i8i OK OHTY

37.	What is the difference between gas and vapours
Answer» Examples of gases are carbon di oxide, OXYGEN , nitrogen etc Vapour are the gases RELEASED when some substance is APPLIED with HEAT

41.	0.13 What is Salt bridge? Give its two turWite a short note on standard hydrogen electrode with figure0.14 Classify any four the following into intensive properties and extensive properties.(2)Density, Enthalpy. Surface tension, Number of moles, viscosity, volume, Colour Entropyimportant effect on equilibrium which involve gaseous substances
Answer» A salt bridge or ION bridge, in electrochemistry, is a laboratory device used to connect the oxidation and reduction half-cells of a GALVANIC cell (voltaic cell), a TYPE of electrochemical cell. It maintains electrical NEUTRALITY within the internal circuit.

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Classify any four of the following into intensive properties and extensive propertiesdensity , enthalpy , surface tension , number of moles , viscosity , volume , colour , entorpy​

Please answer this as fast as you can​

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Iupac nomenclature ​

What type of hybridisation present in Nu2 molecule? ​

Molarity of pure water is​

Arrange Naphthalene, n-octane and iso-octane in increasing order of theirknocking tendency​

If the plane polarised light is passed through an organic substances then it rotates left side is known as rotation​

The hybridisation of molecule C2H4 AND PCl5 are.a) SP3 and SP2 b) SP and SP3. C) SP2 and SP3d.​

Arrange following elements in the order of decreasing atomic raddi: C,B,O,F,N.

Classify any four the following into intensive properties and extensive properties.​

13. Define rate - law.14. Calculate the order of the reaction, whose Rate = K [NO)? [02]15 order Peaction​

Classify any four the following into intensive properties and extensive properties.Density, Enthalpy, Surface tension, Number of moles, viscosity, volume, Colour, Entropy​

Draw electron dot structures of: O2, N2, HCl, CH4, NH3 (​

,. H

How many moles of sodium chloride will be produced by reacting 2 moles of sodium by chlorine gas?Na + Cl2 → NaCl

Answer this using diagram ​

A producer gas has the following percentage composition by volume: CH4 =3.5%; CO = 25%; H = 10%; CO2 = 10.8%; N2 = 50.7%. Calculate thequantity of air required for the complete combustion of lm of the gas. Aircontains 21 by volume of Oxygen​

Which of the following is the smaller size @na (b)na+ (c)na- (d) cu+​

The oxidation number of mn in k MnO4 is +7 [True os false]​

how to determine the number of electrons, neutron,and number of Neutron in an atom ? (make a table for z=1 to z=20)​

Q.3 Which of the following has the smallest size?(a) Na(b) Na(c) Na(d) CI(1)​

Find a scenario in which carbon monoxide was produced by the combustion of a fuel.Why was Carbon monoxide produced instead of carbon dioxide?

Carbon monoxide (CO) is an odorless, colorless gas formed by the incomplete combustion of FUELS. When people are exposed to CO gas, the CO MOLECULES will displace the oxygen in their bodies and lead to poisoning.

produced by other FUEL types

Denser HYDROCARBON fuels, such as diesel, contain more carbon and will therefore produce more CO2 for a given VOLUME of fuel.

What nature is Ca oxide? ​

Out of li, be mg, iln, P and cl whichhave completely filled and hay filled arbitalsconsequently large tonisation enthalpics​

At a pressure of 700mm of mercury a fixed mass of a gas occupies a volume of 75 litres. What pressure must be maintained if the volume is to be increased to 100 litres, temperatureremaining constant? (3)​

D/B minerals and ores​

Solubility of a solute is governed by​

Out of u, Be, Mg, Al, P and I which have completely filled and half-Filled orbitals consequentlylarge lonisation enthalpies​

TowardsAnswer the following on the basis of the above paragraphAccording to which principle there k shift in the equilibrium of gaseous system if pressure isincreased.pressure is increased in which direction the equilibrium will shift in the following reaction​

Explain with the help of activity that water exerts friction .​

out of Li, Be,Mg, Al P and Cl which have completely filled and half filled orbitals consequently large ionisation enthalpy?​

The compressibility factor for H, andHe is usually​

What is the difference between gas and vapours​

Volume occupied by atoms in simple cubic crystal is (a) 52.4% (b) 74% (c) 68% (d) none of these.​

What is the basic and acid radical of sodium oxide

Both magnesium and aluminium aremetals. The valency of magnesium is 2 andaluminium is 3. Which metal will have ahigher combining capacity and why?​

Why is it impossible to determine the equivalent weight of copper by hydrogen displacement method​

This method is not applicable to determine the equivalent mass of less active metals which lies below hydrogen in electrochemical SERIES like Cu, AG, AU since they cannot displace hydrogen from non-oxidising acids. This method is applicable when METAL can form oxide directly or indirectly.

Which of the products will be major product in the reaction given below? ExplainCH3CH=CH2 + HI →CH3CH2CH2I (A) + CH3CHIC​

Classify any four the following into intensive properties and extensive properties.Density, Enthalpy, Surface tension, Number of moles, viscosity, volume, Colour , Entropy​

An example for a solution containing liquid solute in gas solvent is​

> Copper dissolve in Gold <

You are provided a sample of ethyl ether(liquid ). What is the best way to know if its pure or not?​

Ethyl ether is manufactured by the distillation of ethyl alcohol with SULFURIC ACID.

D5 (octahedral ,lowspin ) has maximum number of unpaired electron​

The structure normally associated with Ionic bonding is known as​

Plan a sequence of chemical tests that would distinguish these four compounds. Describe the results that youwould expect.sodium sulfate sodium carbonate sodium iodide potassium iodide

The molecule that deviates from octet rule,And explain Why?a)CCl4b)BF3c)MgOd)NCl3​

Classify any four of the following into intensive properties and extensive propertiesdensity , enthalpy , surface tension , number of moles , viscosity , volume , colour , entorpy

Please answer this as fast as you can

Iupac nomenclature

What type of hybridisation present in Nu2 molecule?

Molarity of pure water is

Arrange Naphthalene, n-octane and iso-octane in increasing order of theirknocking tendency

If the plane polarised light is passed through an organic substances then it rotates left side is known as rotation

The hybridisation of molecule C2H4 AND PCl5 are.a) SP3 and SP2 b) SP and SP3. C) SP2 and SP3d.

Classify any four the following into intensive properties and extensive properties.

13. Define rate - law.14. Calculate the order of the reaction, whose Rate = K [NO)? [02]15 order Peaction

Classify any four the following into intensive properties and extensive properties.Density, Enthalpy, Surface tension, Number of moles, viscosity, volume, Colour, Entropy

Draw electron dot structures of: O2, N2, HCl, CH4, NH3 (

Answer this using diagram

A producer gas has the following percentage composition by volume: CH4 =3.5%; CO = 25%; H = 10%; CO2 = 10.8%; N2 = 50.7%. Calculate thequantity of air required for the complete combustion of lm of the gas. Aircontains 21 by volume of Oxygen

Which of the following is the smaller size @na (b)na+ (c)na- (d) cu+

The oxidation number of mn in k MnO4 is +7 [True os false]

how to determine the number of electrons, neutron,and number of Neutron in an atom ? (make a table for z=1 to z=20)

Q.3 Which of the following has the smallest size?(a) Na(b) Na(c) Na(d) CI(1)

What nature is Ca oxide?

Out of li, be mg, iln, P and cl whichhave completely filled and hay filled arbitalsconsequently large tonisation enthalpics

At a pressure of 700mm of mercury a fixed mass of a gas occupies a volume of 75 litres. What pressure must be maintained if the volume is to be increased to 100 litres, temperatureremaining constant? (3)

D/B minerals and ores

Solubility of a solute is governed by

Out of u, Be, Mg, Al, P and I which have completely filled and half-Filled orbitals consequentlylarge lonisation enthalpies

TowardsAnswer the following on the basis of the above paragraphAccording to which principle there k shift in the equilibrium of gaseous system if pressure isincreased.pressure is increased in which direction the equilibrium will shift in the following reaction

Explain with the help of activity that water exerts friction .

out of Li, Be,Mg, Al P and Cl which have completely filled and half filled orbitals consequently large ionisation enthalpy?

The compressibility factor for H, andHe is usually

What is the difference between gas and vapours

Volume occupied by atoms in simple cubic crystal is (a) 52.4% (b) 74% (c) 68% (d) none of these.

Both magnesium and aluminium aremetals. The valency of magnesium is 2 andaluminium is 3. Which metal will have ahigher combining capacity and why?

Why is it impossible to determine the equivalent weight of copper by hydrogen displacement method

Which of the products will be major product in the reaction given below? ExplainCH3CH=CH2 + HI →CH3CH2CH2I (A) + CH3CHIC

Classify any four the following into intensive properties and extensive properties.Density, Enthalpy, Surface tension, Number of moles, viscosity, volume, Colour , Entropy

An example for a solution containing liquid solute in gas solvent is

You are provided a sample of ethyl ether(liquid ). What is the best way to know if its pure or not?

D5 (octahedral ,lowspin ) has maximum number of unpaired electron

The structure normally associated with Ionic bonding is known as

The molecule that deviates from octet rule,And explain Why?a)CCl4b)BF3c)MgOd)NCl3