Biology MCQs: multiple choice questions and answers,Mock Tests and Practice Papers

Question:

1 molar solution of glucose in water contains weight of glucose

1.180g/dm3

2.170g/dm3

3.190g/dm3

4.195g/dm3

Posted Date:-2021-09-08 21:19:46

Question:

10ml of alcohol dissolve in 90ml of water unit of concentration used is

1.% w/w

2.% w/v

3.% v/v

4.% v/w

Posted Date:-2021-09-08 21:19:46

Question:

58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be

1.0.1 M

2.1 m

3.1 M

4.0.1 N

Posted Date:-2021-09-08 21:19:46

Question:

Among halogens the highest boiling point is of

1.Flrorine

2.Chlorine

3.Bromine

4.Iodine

Posted Date:-2021-09-08 21:19:46

Question:

An element having low value of ionization energy and low value of electron affinity is likely to belong to

1.Group IA

2.Group IB

3.Group VIIA

4.Group VIII

Posted Date:-2021-09-08 21:19:46

Question:

Beckmanns apparatus is used to measure

1.boiling point elevation

2.depression in freezing point

3.lowering of vapour pressure

4.lowering of osmotic pressure

Posted Date:-2021-09-08 21:19:46

Question:

Boiling point elevations can be measured by

1.Beckmanns method

2.Landsbergers method

3.Linds method

4.none of the above

Posted Date:-2021-09-08 21:19:46

Question:

Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called

1.saturated solution

2.solubility

3.unsaturated solution

4.super saturated solution

Posted Date:-2021-09-08 21:19:46

Question:

Concept of Triads was introduced by

1.Dobereiner

2.Newland

3.Mendeleev

4.Al-Razi

Posted Date:-2021-09-08 21:19:46

Question:

Elements in the same vertical group of the periodic table have same

1.Number of valence electrons

2.Atomic number

3.Atomic mass

4.Atomic volume

Posted Date:-2021-09-08 21:19:46

Question:

Elements with similar chemical properties appear in the

1.Same family

2.Same period

3.p block elements

4.Right upper corner

Posted Date:-2021-09-08 21:19:46

Question:

Every sample of matter with uniform properties and fixed composition is called

1.solute

2.solvent

3.solution

4.phase

Posted Date:-2021-09-08 21:19:46

Question:

Homogeneous mixture of two or more than two compounds is called

1.solution

2.compound

3.radical

4.ion

Posted Date:-2021-09-08 21:19:46

Question:

Hydration is a process in which

1.Molecules are surrounded by solvent molecules

2.Ions are surrounded by solvent molecules

3.Both ions and molecules are surrounded by solvent molecules

4.Both ions and molecules are surrounded by water molecules

Posted Date:-2021-09-08 21:19:46

Question:

If the volume of solution is equal to sum of volumes of its all components then the solution

1.will be an ideal solution

2.will be non-ideal solution

3.will show deviations from Raoults law

4.both b & c

Posted Date:-2021-09-08 21:19:46

Question:

In modern periodic table all the leements are arranged in ascending order of

1.Valency

2.Atomic mass

3.Atomic number

4.Valence electrons

Posted Date:-2021-09-08 21:19:46

Question:

In partially miscible liquids the two layers are

1.saturated solutions of each liquid

2.unsaturated solutions of each liquid

3.normal solution of each liquid

4.no layer formation takes place

Posted Date:-2021-09-08 21:19:46

Question:

Mixtures which distill over without change in composition called

1.zeotropic mixture

2.azeotropic mixture

3.amphoteric mixture

4.ideal solution

Posted Date:-2021-09-08 21:19:46

Question:

Noble gases are named so because they are

1.less reactive

2.Zero group elements

3.Having completely filled valence shell

4.All

Posted Date:-2021-09-08 21:19:46

Question:

Number of moles in 1 kg of solvent is called

1.normality

2.molarity

3.molality

4.mole fraction

Posted Date:-2021-09-08 21:19:46

Question:

Periodic table provides a basic framework to study elements with respect to their

1.Physical properties

2.Chemical properties

3.Properties of their compounds

4.All

Posted Date:-2021-09-08 21:19:46

Question:

ppm means

1.parts of solute in 1000 parts of solvent

2.parts of solvent in 1000 parts of solute

3.parts of solute in one million parts of solution

4.parts of solvent in one million parts of solute

Posted Date:-2021-09-08 21:19:46

Question:

Solubility of KCIO3 gives

1.continuous and falling solubility curve

2.discontinuous and falling solubility curve

3.continuous and rising solubility curve

4.discontinuous and rising solubility curve

Posted Date:-2021-09-08 21:19:46

Question:

Solution of Na2SO4 will be

1.basic

2.acidic

3.neutral

4.cannot be presicted without data

Posted Date:-2021-09-08 21:19:46

Question:

Solution with maximum concentration of solute at given temperature is called

1.Super saturated solution

2.unsaturated solution

3.saturated solution

4.dilute solution

Posted Date:-2021-09-08 21:19:46

Question:

The component of solution which is in smaller amount is called

1.solvent

2.solute

3.phase

4.ion

Posted Date:-2021-09-08 21:19:46

Question:

The compounds in which water molecules are added are called

1.Hydrated ions

2.double salts

3.hydrates

4.complexes

Posted Date:-2021-09-08 21:19:46

Question:

The determination of correct molecular weight from Raoults law is applicable to

1.a volatile solute in dilute solution

2.a non-electrolyte & non volatile solute in concentrated solution

3.a non-electrolyte & non volatile solute in concentrated solute

4.non volatile solute in a dilute solution

Posted Date:-2021-09-08 21:19:46

Question:

The longest period in the modern periodic table is

1.6th

2.7th

3.2nd and 3rd both

4.5th

Posted Date:-2021-09-08 21:19:46

Question:

The molal boiling point constant is the ration of the elevation of boiling point to

1.Molarity

2.Molality

3.More fraction of solvent

4.Mole fraction of solute

Posted Date:-2021-09-08 21:19:46

Question:

The relative lowering of vapour pressure is

1.equal to the mole fraction of solvent

2.equal to the mole fraction of solute

3.directly proportional to the mole fraction of solute

4.both b & c

Posted Date:-2021-09-08 21:19:46

Question:

The relative lowering of vapour pressure is directly proportional to molality if the solution is

1.concentrated

2.dilute

3.saturated solution

4.all of the above

Posted Date:-2021-09-08 21:19:46

Question:

The scientist who did not contribute in the construction of periodic table?

1.Al-Razi

2.Moseley

3.Dobereiner

4.Democritus

Posted Date:-2021-09-08 21:19:46

Question:

The solution which distils over with change in composition

1.ideal solution

2.zeotropic solution

3.azeotropic solution

4.non-ideal solution

Posted Date:-2021-09-08 21:19:46

Question:

Water molecules surrounds more around

1.ve ion

2.complex ion

3.?ve ion

4.neutral atom

Posted Date:-2021-09-08 21:19:46

Question:

Water of crystallization can be removed by

1.drying

2.heating

3.evaporation

4.All of the above

Posted Date:-2021-09-08 21:19:46

Question:

When common salt is dissolved in water?

1.Boiling point of water dicrease

2.Boiling point of water increase

3.Boiling point of water remains same

4.None of the above

Posted Date:-2021-09-08 21:19:46

Question:

Which element was not known when Mendeleev proposed his classification?

1.Hydrogen

2.Sodium

3.Copper

4.Germanium

Posted Date:-2021-09-08 21:19:46

Question:

Which has the minimum freezing point?

1.One Molal NaCI

2.One molal KCI solution

3.One molal CaCI2

4.One molal urea solution

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following always increases on going from top to bottom in a group?

1.Metallic character

2.Electronegativity

3.Oxidizing power

4.Tendency to get reduced

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following are the conditions of colligative properties

1.Non-electrolye solute

2.Non-volatile solute

3.Dilute solution

4.All of the above

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following is an example of liquid in gas solution.

1.Opals

2.Dust particles in smoke

3.Paints

4.Fog

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following is not a colligative property?

1.Lowering of vapour pressure

2.Freezing point

3.Osmotic pressure

4.Elevation of polling point

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following substance do not show continuous solubility curve?

1.KCIO4

2.Na2SO4. 10H2O

3.K2Cr2O7

4.PbCl2

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following unit of concertration is independent of temperature?

1.Molarity

2.Molality

3.Mole fraction

4.all

Posted Date:-2021-09-08 21:19:46

Question:

Which of the following will not form crystalline structure with opporitely charged ions

1.H+

2.H-

3.Mg2+

4.Ca2+

Posted Date:-2021-09-08 21:19:46

Question:

Which of the p-block elements are not representative elements?

1.Alkali metals (I-A)

2.Group-14 elements (IV-A)

3.Group-18 elements (VIII-A)

4.Halogens (VII-A)

Posted Date:-2021-09-08 21:19:46

Question:

Which one of the following salt does not hydrolyzed

1.Na2SO4

2.AlCl3

3.CuSO4

4.NH4Cl

Posted Date:-2021-09-08 21:19:46

Question:

Which set of elements is listed in order of increasing ionization energy?

1.Sb < As < S < P < Cl

2.Cl < Sb < P < As < S

3.As < Cl < P < S < Sb

4.Sb < As < Cl < S < P

Posted Date:-2021-09-08 21:19:46

Question:

Which statement is incorrect?

1.All the metals are good conductor of electricity.

2.All the metals are good conductor of heat

3.All the metals form positive ions

4.All the metals form acidic oxides

Posted Date:-2021-09-08 21:19:46

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Biology/ Sample Test,Sample questions

Question: 1 molar solution of glucose in water contains weight of glucose

Question: 10ml of alcohol dissolve in 90ml of water unit of concentration used is

Question: 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be

Question: Among halogens the highest boiling point is of

Question: An element having low value of ionization energy and low value of electron affinity is likely to belong to

Question: Beckmanns apparatus is used to measure

Question: Boiling point elevations can be measured by

Question: Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called

Question: Concept of Triads was introduced by

Question: Elements in the same vertical group of the periodic table have same

Question: Elements with similar chemical properties appear in the

Question: Every sample of matter with uniform properties and fixed composition is called

Question: Homogeneous mixture of two or more than two compounds is called

Question: Hydration is a process in which

Question: If the volume of solution is equal to sum of volumes of its all components then the solution

Question: In modern periodic table all the leements are arranged in ascending order of

Question: In partially miscible liquids the two layers are

Question: Mixtures which distill over without change in composition called

Question: Noble gases are named so because they are

Question: Number of moles in 1 kg of solvent is called

Question: Periodic table provides a basic framework to study elements with respect to their

Question: ppm means

Question: Solubility of KCIO3 gives

Question: Solution of Na2SO4 will be

Question: Solution with maximum concentration of solute at given temperature is called

Question: The component of solution which is in smaller amount is called

Question: The compounds in which water molecules are added are called

Question: The determination of correct molecular weight from Raoults law is applicable to

Question: The longest period in the modern periodic table is

Question: The molal boiling point constant is the ration of the elevation of boiling point to

Question: The relative lowering of vapour pressure is

Question: The relative lowering of vapour pressure is directly proportional to molality if the solution is

Question: The scientist who did not contribute in the construction of periodic table?

Question: The solution which distils over with change in composition

Question: Water molecules surrounds more around

Question: Water of crystallization can be removed by

Question: When common salt is dissolved in water?

Question: Which element was not known when Mendeleev proposed his classification?

Question: Which has the minimum freezing point?

Question: Which of the following always increases on going from top to bottom in a group?

Question: Which of the following are the conditions of colligative properties

Question: Which of the following is an example of liquid in gas solution.

Question: Which of the following is not a colligative property?

Question: Which of the following substance do not show continuous solubility curve?

Question: Which of the following unit of concertration is independent of temperature?

Question: Which of the following will not form crystalline structure with opporitely charged ions

Question: Which of the p-block elements are not representative elements?

Question: Which one of the following salt does not hydrolyzed

Question: Which set of elements is listed in order of increasing ionization energy?

Question: Which statement is incorrect?

More MCQS

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R4R Team

Question:
1 molar solution of glucose in water contains weight of glucose

Question:
10ml of alcohol dissolve in 90ml of water unit of concentration used is

Question:
58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be

Question:
Among halogens the highest boiling point is of

Question:
An element having low value of ionization energy and low value of electron affinity is likely to belong to

Question:
Beckmanns apparatus is used to measure

Question:
Boiling point elevations can be measured by

Question:
Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called

Question:
Concept of Triads was introduced by

Question:
Elements in the same vertical group of the periodic table have same

Question:
Elements with similar chemical properties appear in the

Question:
Every sample of matter with uniform properties and fixed composition is called

Question:
Homogeneous mixture of two or more than two compounds is called

Question:
Hydration is a process in which

Question:
If the volume of solution is equal to sum of volumes of its all components then the solution

Question:
In modern periodic table all the leements are arranged in ascending order of

Question:
In partially miscible liquids the two layers are

Question:
Mixtures which distill over without change in composition called

Question:
Noble gases are named so because they are

Question:
Number of moles in 1 kg of solvent is called

Question:
Periodic table provides a basic framework to study elements with respect to their

Question:
ppm means

Question:
Solubility of KCIO3 gives

Question:
Solution of Na2SO4 will be

Question:
Solution with maximum concentration of solute at given temperature is called

Question:
The component of solution which is in smaller amount is called

Question:
The compounds in which water molecules are added are called

Question:
The determination of correct molecular weight from Raoults law is applicable to

Question:
The longest period in the modern periodic table is

Question:
The molal boiling point constant is the ration of the elevation of boiling point to

Question:
The relative lowering of vapour pressure is

Question:
The relative lowering of vapour pressure is directly proportional to molality if the solution is

Question:
The scientist who did not contribute in the construction of periodic table?

Question:
The solution which distils over with change in composition

Question:
Water molecules surrounds more around

Question:
Water of crystallization can be removed by

Question:
When common salt is dissolved in water?

Question:
Which element was not known when Mendeleev proposed his classification?

Question:
Which has the minimum freezing point?

Question:
Which of the following always increases on going from top to bottom in a group?

Question:
Which of the following are the conditions of colligative properties

Question:
Which of the following is an example of liquid in gas solution.

Question:
Which of the following is not a colligative property?

Question:
Which of the following substance do not show continuous solubility curve?

Question:
Which of the following unit of concertration is independent of temperature?

Question:
Which of the following will not form crystalline structure with opporitely charged ions

Question:
Which of the p-block elements are not representative elements?

Question:
Which one of the following salt does not hydrolyzed

Question:
Which set of elements is listed in order of increasing ionization energy?

Question:
Which statement is incorrect?