Frank ICSE Solutions for Class 9 Chemistry – Practical WorkPAGE NO :170 Solution 1: On heating certain solids they don’t melt and directly get converted to their gaseous form, this process of direct conversion of solids to their gaseous form is called as…

Frank ICSE Solutions for Class 9 Chemistry – Atmospheric PollutionPAGE NO :158 Solution 1: Acid rain is the rain that has an excessive amount of acid in it than that of normal. Two air pollutants that cause acid rain are-Oxides of nitrogenOxides of sulph…

Frank ICSE Solutions for Class 9 Physics – Electricity and MagnetismPAGE NO: 323 Solution 1: Positive and negative are the two kind of charges.Solution 2: Net charge on an atom is zero. Solution 3: 10 is the number of electrons present in Na+.Solution 4:…

Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: MagnestismPAGE NO: 320 Solution 1: Natural magnet is the deposits of the iron ore which has the attracting property of iron The properties of natural magnet are :The magnet has the di…

Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: Current ElectricityPAGE NO: 312 Solution 1: The flow of electrons in a particular direction in a conductor is called an electric current.Solution 2: An electric cell is the source of …

Frank ICSE Solutions for Class 9 Physics – Electricity and Magnetism: Static ElectricityPAGE NO: 300 Solution 1: Electrostatics is defined as the study of charges at rest.Solution 2: Frictional electricity is also known as static electricity. Solution 3…

Frank ICSE Solutions for Class 9 Physics – SoundPAGE NO: 286 Solution 1: Yes, we can hear in the dark room.Solution 2: Sound is produced by the vibrating objects. Solution 3: Yes, sound is a form of energy.Solution 4: No, sound cannot travel through vac…

Frank ICSE Solutions for Class 9 Physics – Sound: Range of HearingPAGE NO: 284 Solution 1: The frequency of sound is defined as the number of vibrations produced by the sound producing object per second.Solution 2: S.I unit of frequency is hertz. Soluti…

Frank ICSE Solutions for Class 9 Physics – Sound: Production and Propagation of SoundPAGE NO: 278 Solution 1: Yes, Sound is form of energy.Solution 2: Sound is produced by the vibrating objects. Solution 3: No, sound cannot travel through vacuum.Solutio…

Frank ICSE Solutions for Class 9 Biology – Respiratory SystemPAGE NO:176 Solution 1: Respiration: It is a process of release of energy from food substances such as glucose and fats under the control of enzymes, to carry out life processes, by the living …