2.1: ATOMIC NUMBER, PROTON NUMBER AND NUCLEON NUMBER; IDENTITY OF AN ELEMENT 1n 1913, Moseley observed that when different elements were bombarded with cathode rays, the X-rays of some characteristic frequencies were produced. It was found that the square root…
Here are chapter wise solutions for chemistry-11 textbook of new syllabus (2025-26). Each chapter contains the following types of solutions: The list of all the chapters with solutions is given below:
Here are textbook solutions of different subjects related to metric and intermediate levels of education. Initially, new syllabuses are targeted. Hope you will find it very helpful in your studies. The range of solutions provided are: The solutions of the…
ENVIRONMENTAL CHEMISTRY FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Only _______ of the total earth’s water resources are available as fresh water. (1%) (ii) ________ is a smaller unit of biosphere which consists of community of organisms…
COMMON CHEMICAL INDUSTRIES IN PAKISTAN FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Fertilizers enhance the natural___________ of the soil. (fertility) (ii) Micro-nutrients are required in quantity ranging from ________ per acre. (6—200 g) (iii) Ammonia contains ________…
MACROMOLECULES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Macromolecules are built up from small units called _______. (monomer) (ii) Nylon is a polyamide and terylene is a ________. (polyester) (iii) Nylon is prepared by the reaction of…
CARBOXYLIC ACIDS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Formula of malonic acid is __________. (HOOC–CH2–COOH) (ii) Methyl nitrile upon acidic hydrolysis produces ________. (acetic acid) (iii) Melting points of carboxylic acids containing even number of carbon…
ALDEHYDES AND KETONES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Aldehydes are the first oxidation product of _________. (primary alcohols) (ii) Ketones are the first oxidation product of __________. (secondary alcohols) (iii) Aldehydes and ketones undergo ________…
ALCOHOLS, PHENOLS & ETHERS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Primary, secondary and tertiary alcohols can be identified by _______ test. (Lucas) (ii) Oxidation of ________ alcohols give ketones. (secondary) (iii) Alcohols on heating with ________…
ALKYL HALIDES FILL IN THE BLANKS Q.01: Fill in the blanks: (i) In tertiary alkyl halides the halogen atom is attached to a carbon which is further attached to ______ carbon atoms directly. (three) (ii) The best method for the…