94420 + Interview Questions in Chemistry in Class 12 Page 503 InterviewSolution

25101.	The proteins with a prosthetic group are called
Answer» Pseudo COMPLEX proteins Conjugated proteins Polypeptides Solution :SIMPLE protein `+UNDERSET("(Prosthetic group or co-factor)")("non - protein MATERIAL") to ` conjugated protein

Discussion

25102.	The proteins which are insoluble in water are
Answer» FIBROUS PROTEINS Globular proteins both (a) and (B) None of these Solution :Fibrous proteins are insoluble in water.

Discussion

25103.	The proteins are hydrolysed with acids, alkalies or enzymes finally to:
Answer» AMINO acids Ethers Esters Cycloparaffins Answer :D

Discussion

25104.	The protein which maintains the blood sugar level in the human body is. …….. .
Answer» HAEMOGLOBIN OXYTOCIN insulin ptyalin ANSWER :C

Discussion

25105.	The protein present in the milk is
Answer» CASEIN INSULIN MYOSIN KERATIN SOLUTION :Casein

Discussion

25106.	The protein part of the Haemoglobin and non protein part of Haemoglobin are coordinated through
Answer» N of the pyrrole N-of the Histidine N of 2,3-dimethyl Benzimidazole N of the 5,6-dimethyl Benzimidazole Answer :B

Discussion

25107.	The protein that is a structural material is
Answer» ALBUMIN OXYTOCIN HAEMOGLOBIN KERATIN ANSWER :D

Discussion

25108.	The protein is responsible for transport of oxygen in the bloodstream is
Answer» Haemoglobin Insulin Myoglobin Albumin Answer :A

Discussion

25109.	The protein found in biological system with unique three - dimensional structure and biological activity is called …………………..
Answer» CONJUGATED proteins DERIVED proteins Native proteins PROSTHETIC groups SOLUTION :Native proteins

Discussion

25110.	The protective power of the lyophilic colloids is expressed in terms of gold number a term introduced by Zsigmondy Gold number is the number of milligram of the protective colloid which prevent the coagulation of 10 ml of red gold sol, when 1 ml of a 10 percent solution of sodium chloride is added to it. Thus, smaller the gold number of lyophilic colloid, the greater is the protective power. Which of the following statement(s) is/are correct
Answer» Higher the gold number, more to the PROTECTIVE POWER of colloid Lower the gold number, more the protective power Higher the COAGULATION value, more the coagulation power Lower the coagulation value, higher the coagulation power Answer :B::D

Discussion

25111.	The protective power of the lyophilic colloids is expressed in terms of gold number a term introduced by Zsigmondy Gold number is the number of milligram of the protective colloid which prevent the coagulation of 10 ml of red gold sol, when 1 ml of a 10 percent solution of sodium chloride is added to it. Thus, smaller the gold number of lyophilic colloid, the greater is the protective power. On addition of one mL of solution of 10% NaCl to 10 mL of red gold sol in presence of 0.025 g of starch, the coagulation is just prevented. The gold number of starch is
Answer» 0.25 0.25 2.5 25 Answer :D

Discussion

25112.	The protective power of the lyophilic colloids is expressed in terms of gold number a term introduced by Zsigmondy Gold number is the number of milligram of the protective colloid which prevent the coagulation of 10 ml of red gold sol, when 1 ml of a 10 percent solution of sodium chloride is added to it. Thus, smaller the gold number of lyophilic colloid, the greater is the protective power. Gold number gives an indication of
Answer» protective NATURE of colloids purity of gold in suspension the charge on a COLLOIDAL solution of gold g-mole of gold PER litre Answer :A

Discussion

25113.	The protective film of oxide on the surface of Al metal may be strengthened by :
Answer» Galvanizing Cathodizing Sherardizing Anodizing Answer :D

Discussion

25114.	The protection of steel by chrome plating is due to
Answer» CATHODIC protection Anodic protection Covering of STEEL surface Formation of ALLOY with iron Answer :A

Discussion

25115.	The protecting power of lyophilic colloidal solution is expressed in terms of
Answer» CRITICAL MICELLE concentration Oxidation NUMBER COAGULATION value Gold number ANSWER :D

Discussion

25116.	The prosthetic group of nucleoproteins are ...............while those of glycoproteins are .............
Answer» SOLUTION :NUCLEIC ACIDS , CARBOHYDRATES

Discussion

25117.	The protecting power of lyophilic colloidal sol is expressed in terms of :
Answer» COAGULATION value gold number CRITICAL miscelle CONCENTRATION oxidation number . Answer :B

Discussion

25118.	The prosthetic group of haemoglobin is
Answer» porphin globulin HAEM gelatin SOLUTION :The PROSTHETIC group of haemoglobin is haem `(Fe^(2+))`

Discussion

25119.	The prosses of valcanisation of rubber was introducedby:
Answer» ZEIGLER MRF Charles GOOD year Wohler Answer :C

Discussion

25120.	The prospective fuel gasohol is a mixture of :
Answer» GASEOUS HYDROCARBONS and HEAVY water Petrol and phenol Petrol and ethanol Radioactive substances Answer :C

Discussion

25121.	The proportion of O_2, SO_2 and SO_3present in the mixture of gases is 0.5 : 0.3 :0.2. They are allowed through a pinhole at 27^@C . Calculate the composition of the mixture leaving initially.
Answer» SOLUTION :3.953 : 1.677 : 1.0

Discussion

25122.	The proposition equal volumes of different gases contain equal numbers of molecules at the same temperature and pressure is known as
Answer» Avogadro's hypothesis Gay-Lussac's hypothesis Planck's hypothesis Kirchhoff's theory SOLUTION :ZINC metals is USED to protect iron from CORROSION because zinc is more electropositive than iron . The process of coating the iron surface by zinc is called galvanisation . Zinc metal present on the surface of iron FORMS a thin protective layer of basis zinc carbonate due to reactionbetween zinc , oxygen , CO2 and moisture in air . Since , standard reduction potential of zinc is less than iron , hence iron will not undergo corrosion.

Discussion

25123.	The proportion of hexamethylenediamine and adipic acid used in the preparation of nylon-6,6 is
Answer» `1:2` `1:1` `2:1` `2:3` SOLUTION :In the preparation of Nylon-6,6, 1 mole of HEXAMETHYLENEDIAMINE reacts with 1 mole of ADIPIC acid because hexamethylenediamine is a diacid base and adipic acid is dibasic acid.

Discussion

25124.	The proportion of CaF_(2) in a sample of water is 156 ppm. What will be its molarity ? [Mole. Mass of CaF_(2) is 78 gm/mol.]
Answer» 0.01 M 0.02 M 0.002 M 0.001 M ANSWER :C

Discussion

25125.	The property which is not true about Fluorine is,
Answer» Most of its REACTIONS are exothermic. It forms only one oxo ACID. HIGHEST electronegativity. High F-F bond dissociation enthalpy. Solution :DUE to small size of FLUORINE atoms , electrons repel each other and hence, bond dissociation enthalpy of `F_2` is low.

Discussion

25126.	The property, which is not characteristic of transition metals:
Answer» VARIABLE OXIDATION states tendency to FORM complexes formation of COLOURED compounds None of these Answer :D

Discussion

25127.	The property which is not characterstic of transition clements is
Answer» FORMATION of compexes formation of COLOURED compounds variable OXIDATION states have LOW m.p Answer :D

Discussion

25128.	The property which is not true about fluorine is
Answer» most of its reactions are exothermic it forms only one oxo acid highest electronegativity HIGH F - F bond dissociation enthalpy. Solution : DUE to small size of fluorine atoms electrons REPEL each other and HENCE, bonds dissociation ENTHALPHY of `F_(2)` is low

Discussion

25129.	The property which depends on number of particles of solute is called .............
Answer» SOLUTION : COLLIGATIVE PROPERTY

Discussion

25130.	The property that ocrresponds to the order HI gt HBr gt HCl gt HF is
Answer» THERMAL STABILITY REDUCING power Ionic character Bond strenght Answer :B

Discussion

25131.	The property of the colloid which is independent on the charge of colloidal particle is_______.
Answer» cataphoresis electrophoresis electro - osmosis Tyndall effect Answer :D

Discussion

25132.	The property not attributed to crystalline solids is
Answer» ISOTROPIC Sharp MELTING point A definite and REGULAR geometry High INTERMOLECULAR forces. Solution :Isotropic

Discussion

25133.	The property by virtue of which a compound can turn the plane of polarization of light is known as:
Answer» Photolysis Phosphorescence Optical activity Polarization Answer :C

Discussion

25134.	The properties which are common to the elements belonging to groups 1 and 17 of periodic tables are.
Answer» ELECTROPOSITIVE character increases down the group. reactivity decreases from top to bottom. atomic radii increases as atomic NUMBER increases. electronegatively decreases on moving down a group. ANSWER :A::C::D

Discussion

25135.	The properties which do not depend on the quantity of matter present in the system are called_____.
Answer» ANSWER :INTENSIVE PROPERTIES

Discussion

25136.	The property by virtue of which a compound can rotate the plane of polarised light is :
Answer» PHOTOLYSIS Racemisation OPTICAL ACTIVITY PHOSPHORESCENCE ANSWER :C

Discussion

25137.	The properties which are common to both groups 1 and 17 elements in the periodic table are
Answer» electropostive character INCREASES down the groups reactivity decreases from TOP to bottom in these groups atomic radii increases as the atomic number increases electronegativity decreases on moving down a group SOLUTION :Statements (a), (c) and (d) are common to both the group 1 and 17. STATEMENT (b) is true only for group 17 ELEMENTS.

Discussion

25138.	The properties which are common to both groups 1 and 17 elements in the periodic table are:
Answer» electropositive character incrases down the groups Reactivity decrases from top to bottom in these grous atomic radii incrases as the atomic number increases Electronegativity decreases on moving down a GROUP Solution :Statements (a), (C) and (d) are common to both the groups 1 and 17. STATEMENNT (b) is true only for group 17 elements.

Discussion

25139.	The properties of Zr and Hf are similar because :
Answer» both belong to d-block both belong to same GROUP of the periodic table both have SIMILAR radii both have same NUMBER of ELECTRONS ANSWER :C

Discussion

25140.	The properties of solutions which depend upon the number of solute particles and are independent of their chemical identity are called_____properties.
Answer» SOLUTION :COLLIGATIVE

Discussion

25141.	The properties of tungsten and molybdenum are sinmilar because
Answer» both belong to d-block both belong to same GROUP of the PERIODIC table both have same NUMBER of ELECTRONS both have same radii Answer :D

Discussion

25142.	The properties of dilute or ideal soltions which depend only upon the concerntration of the solute in the solution and to other characteristics are known as colligative properties. There are in all four such properties i.e., relative lowering in vap[our pressure, osmotic pressure, elevation in boiling point tmperature and depression in freezing point temperature. All of them them in calculating the observed molar mass of the solute which is inversely propertional to the coligative propertyinvolved. Out of these, osmotic pressure may be regarded as the best for the determination of molecular mass of the solute. According to Van't Hoff theory of dilute solution. pi=CRT, where pi is the osmotic pressure while C is the molar concentration of the solution. (11) The value of osmotic pressure does not depend upon
Answer» CONCENTRATION of the solution Temperature of the solution Number of the particles of the solute present STRUCTURE of the solute particles. Solution :Value of COLLIGATIVE property does not depend UPON STRCTURE of solute particles.

Discussion

25143.	The properties of LSD are similar to
Answer» Serotonine Mescacine ADRENALINE All ANSWER :D

Discussion

25144.	The properties of protein are determined by ________.
Answer» NATURE of the amino acids the POSITION of `NH_(2)` GROUP the position of COOH group all Solution :nature of the amino acids

Discussion

25145.	The properties of solutions which depend only on the number of particles of solute (or the number of moles of solute) but independent of the nature of the solute are called
Answer» EXTENSIVE properties intensive properties colloidal properties colligative properties Answer :D

Discussion

25146.	The properties of dilute or ideal soltions which depend only upon the concerntration of the solute in the solution and to other characteristics are known as colligative properties. There are in all four such properties i.e., relative lowering in vap[our pressure, osmotic pressure, elevation in boiling point tmperature and depression in freezing point temperature. All of them them in calculating the observed molar mass of the solute which is inversely propertional to the coligative propertyinvolved. Out of these, osmotic pressure may be regarded as the best for the determination of molecular mass of the solute. According to Van't Hoff theory of dilute solution. pi=CRT, where pi is the osmotic pressure while C is the molar concentration of the solution. (10) On frezing an aqueous solution of sugar, the solid which starts separating out is :
Answer» SUGAR crystals in COLD water ice solution with the same COMPOSITION solution with DIFFERENT compositions. Solution :Ice i.e., solvent will start separating form the solution.

Discussion

25147.	The properties of dilute or ideal soltions which depend only upon the concerntration of the solute in the solution and to other characteristics are known as colligative properties. There are in all four such properties i.e., relative lowering in vap[our pressure, osmotic pressure, elevation in boiling point tmperature and depression in freezing point temperature. All of them them in calculating the observed molar mass of the solute which is inversely propertional to the coligative propertyinvolved. Out of these, osmotic pressure may be regarded as the best for the determination of molecular mass of the solute. According to Van't Hoff theory of dilute solution. pi=CRT, where pi is the osmotic pressure while C is the molar concentration of the solution. (9) The azeotropic mixture of water and HCI boils at 108.5^(@)C when the mixture is distilled. It is possible to obtain :
Answer» PURE HCI pure water pure wter as WELL as pure HCI neither HCI nor water in their pure states. Solution :NONE of th two COMPONENTS will separe\ate in pure form.

Discussion

25148.	The properties of dilute or ideal soltions which depend only upon the concerntration of the solute in the solution and to other characteristics are known as colligative properties. There are in all four such properties i.e., relative lowering in vap[our pressure, osmotic pressure, elevation in boiling point tmperature and depression in freezing point temperature. All of them them in calculating the observed molar mass of the solute which is inversely propertional to the coligative propertyinvolved. Out of these, osmotic pressure may be regarded as the best for the determination of molecular mass of the solute. According to Van't Hoff theory of dilute solution. pi=CRT, where pi is the osmotic pressure while C is the molar concentration of the solution. (8) When liquids A and B are mixed, hydrogen bonding occure. The solution will show.
Answer» positive deviation form Raoult's Law negative deviatin form Raoult's Law no deviation form Raoult's Law slightly increses in volume. Solution :is the CORRECT ANSWER

Discussion

25149.	The properties of cast iron , wrought iron and steel are different because they have :
Answer» Different contents of SULPHUR Different contents of CARBON TRACES of different elements Traces of different IRON oxides Answer :B

Discussion

25150.	The properties of 3 ^(rd) transition series elements and 2^(nd) transition series elements are same because of
Answer» both BELONG to d-block both belong to same group of the periodic table both have same NUMBER of ELECTRONS both have same radii Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

The proteins with a prosthetic group are called

The proteins which are insoluble in water are

The proteins are hydrolysed with acids, alkalies or enzymes finally to:

The protein which maintains the blood sugar level in the human body is. …….. .

The protein present in the milk is

The protein part of the Haemoglobin and non protein part of Haemoglobin are coordinated through

The protein that is a structural material is

The protein is responsible for transport of oxygen in the bloodstream is

The protein found in biological system with unique three - dimensional structure and biological activity is called …………………..

The protective film of oxide on the surface of Al metal may be strengthened by :

The protection of steel by chrome plating is due to

The protecting power of lyophilic colloidal solution is expressed in terms of

The prosthetic group of nucleoproteins are ...............while those of glycoproteins are .............

The protecting power of lyophilic colloidal sol is expressed in terms of :

The prosthetic group of haemoglobin is

The prosses of valcanisation of rubber was introducedby:

The prospective fuel gasohol is a mixture of :

The proportion of O_2, SO_2 and SO_3present in the mixture of gases is 0.5 : 0.3 :0.2. They are allowed through a pinhole at 27^@C . Calculate the composition of the mixture leaving initially.

The proposition equal volumes of different gases contain equal numbers of molecules at the same temperature and pressure is known as

The proportion of hexamethylenediamine and adipic acid used in the preparation of nylon-6,6 is

The proportion of CaF_(2) in a sample of water is 156 ppm. What will be its molarity ? [Mole. Mass of CaF_(2) is 78 gm/mol.]

The property which is not true about Fluorine is,

The property, which is not characteristic of transition metals:

The property which is not characterstic of transition clements is

The property which is not true about fluorine is

The property which depends on number of particles of solute is called .............

The property that ocrresponds to the order HI gt HBr gt HCl gt HF is

The property of the colloid which is independent on the charge of colloidal particle is_______.

The property not attributed to crystalline solids is

The property by virtue of which a compound can turn the plane of polarization of light is known as:

The properties which are common to the elements belonging to groups 1 and 17 of periodic tables are.

The properties which do not depend on the quantity of matter present in the system are called_____.

The property by virtue of which a compound can rotate the plane of polarised light is :

The properties which are common to both groups 1 and 17 elements in the periodic table are

The properties which are common to both groups 1 and 17 elements in the periodic table are:

The properties of Zr and Hf are similar because :

The properties of solutions which depend upon the number of solute particles and are independent of their chemical identity are called_____properties.

The properties of tungsten and molybdenum are sinmilar because

The properties of LSD are similar to

The properties of protein are determined by ________.

The properties of solutions which depend only on the number of particles of solute (or the number of moles of solute) but independent of the nature of the solute are called

The properties of cast iron , wrought iron and steel are different because they have :

The properties of 3 ^(rd) transition series elements and 2^(nd) transition series elements are same because of