Most important question class-12th (Chemistry)

Important question class-12th (2019-20)

(1) Write difference between the Molecularity and order of Reaction?

(2) Write difference between Ideal and non-ideal solutions?

(3)Why is Sky blue in colour?

(4) What is half life period of Reaction? Calculate the half life of first order reaction?

(5) What is Corrosion? Explain its mechanism.Write three factor affecting corrosion and two prevention of corrosion.

(6) What is electrochemical cell? Explain its working process giving an example of Daniel cell?

(7) What is Raoult's law?

(8) Write difference between aldehydes and ketones?

(9) What is co-ordination number?

(10) Write Henry's law related to Solubility?

(11) What are Chelates?

(12) What is dialysis?

(13) What is emulsion?

(14) What do you mean by Coagulation?

(15) Explain Dry cell with diagram?

(16) Explain Effective atomic number?

(17) What is Standard hydrogen electrode?How it is prepared?

(18) What is Arrehenius equation? Explain and write it's application?

Comments

Dalton's Atomic Theory—(Chemistry)

Dalton's Atomic Theory The theory that' all matter is made up of very tiny indivisible particles (atoms)' is called atomic theory of matter. Dalton's put forward his Atomic Theory of matter in 1808. The various postulates of Dalton's atoAto Theory of matter are as follows: All the matter is made up of very small particles called 'atoms'. Atoms cannot be divided. Atoms can neither be created nor destroyed Atoms are of various kinds. There are as many kinds of atoms as are elements. All the atoms of a given element are identical in every respect, having the same mass, size and chemical properties. Atoms of different elements differ in mass, size and chemical properties. Chemical combination between two elements consists in the joining together of atoms of these elements to form molecules of compounds. Drawbacks of Dalton's Atomic Theory It is now known that some of the statements of Dalton's Atomic Theory of matter are not exactly corre...

The sentence//Kinds of sentence (English grammar)

The Sentence— A group of words that makes complete sense is called a Sentence. Example– (1) Birds fly in the air. (2) She writes very well. Phrase A group of words that makes sense but not complete sense. Example– (1) in a great hurry. (2) in the early morning. Kinds of sentence— Declarative Sentence Interrogative Sentence Imperative Sentence Exclamatory Sentence Declarative Sentence— A sentence that states or declares something is called a Declarative sentence. Example- (1) The sun rises in the east. (2) The boys made a noise. Interrogative Sentence– A sentence that asks a question is called Interrogative sentence. Example- (1) Why were you late yesterday ? (2) Have you done your lesson ? Imperative Sentence— A sentence that expresses a command, a request, or a desire is called an Imperative sentence. Example– (1) Amar, shut the door. (2) Please do this just now. Exclamatory Sentence— A sentence that expresses some strong or sudden feeling is call...

Basic notes—Indian Penal Code (IPC)—Chapter-1(Law Students)

Chapter-1 (Introduction)— Preamble- General penal code for India (Sec-1) Title and Extent- Extend to whole India except Jammu& Kashmir. (Sec-2) Punishment of offence Committed within India— Who Committed crime under the code shall be guilty within India. (Sec-3) Punishment of offence Committed beyond but which by law may be tried within India. (Sec-4) Extension of code to Entro-territorial offence. Any ship or aircraft registered in India. Committed offence targeting a computer resource located in India. Explanation— Computer Resource shall have the meaning assigned to it in clause of sub sec(1) of sec-2 of Information technology Act 2000. (Sec-5) Certain laws not to be affected by this Act-For mutiny, & dessertion of offences, Soldiers, Sailor or Airman in the service of Government of India any special or local law.

TIME SMART STUDY

Search This Blog