B. Dobereiner

C. Al-Razi

D. Moseley

B. All

C. They have greater atomic radii

D. They are more reactive

A. Bromine

B. Chlorine

D. Fluorine

A. Both are electropositive

B. Similar outer most shell electronic configuration

C. Both form ionic compounds

A. one

B. yl

D. al

B. Clemmenson reduction

C. Friedel & Craft acylation

D. Dows process

B. 250.5 Cal/mol

C. 150.5 Cal/mol

D. 250.5 kJ/mol

A. FeSO4.No3

B. FeSO4.N2o

D. FeSO4.No2

A. Their oxides are basic

B. Their oxide and hydroxides are water soluble

D. They are found in earth

A. Benzoic acid

B. Tartaric acid

D. Oxalic acid

A. Temperature

C. Pressure

D. Ineffective collisions

A. Ester

B. Alkene then COOH

C. ketone

A. Substitution reaction

B. Addition reaction

D. Elimination reaction

A. White

C. red

D. Violet

B. It does not exists

C. Basic oxide

D. Acidic oxide

A. Cu

B. Cr

C. Ni

A. Atomic mass

B. Valence electrons

D. Valency

B. ethanol and acetic acid

C. ethanol

D. acetic acid

A. Ionization energy of elements

C. Melting point of elements

D. Boiling point of elements

A. Thermite process

B. Haber process

C. Contact process

A. Strong hydrogen bonding

C. Strong covalent bond

D. Large value of dipole moment

A. Isotropes

C. Isobars

D. Isomers

A. Atomic mass

B. Atomic number

C. Atomic volume

A. Al-Razi

C. Mendeleev

D. Newland

A. 2 amino and 2 carboxylic groups

C. 1 amino and 1 carboxylic groups

D. 2 amino groups and 1 carboxylic group

B. Carbon

C. Bismuth

D. Phosphorus

B. For enamel and glazes

C. For washing eyes

D. As antiseptic in medicine

A. Ge

C. Se

D. Si

A. Soluble only in organic solvents

B. More soluble in cold water

D. Insoluble in water

A. Properties of their compounds

C. Chemical properties

D. Physical properties

A. Lanthanides

B. Rare earth metals

C. Actinides

A. Specificity

B. Its own Ea

C. Special structure

B. oxalic acid

C. succinic acid

D. malonic acid

A. basic

B. acidic

D. aqueous

A. neo-alkane

C. normal-alkane

D. branched-alkane

A. 1

B. 2.198

C. 4

A. iso-octane

B. 3-methyl octane

C. 2-methyl octane

B. 1 3 5 -trinitro benzene

C. p-nitrophenol

D. o-nitrophenol

A. 180

B. 115.5

C. 105. 7

B. M-nitrophenol

C. O-nitrophenol

D. Phenol

A. alkyne & Cl2

C. alkene & O2

D. alkene & N2

A. Iodine

C. Bromine

D. Chlorine

A. C2H5O-

C. NH3

D. SCN-

A. CnH2n

B. CnH2n + 2

C. CnH2n + 2

A. carbonic acid

B. methanol

D. methane

A. Torsional strain

C. Angle strain

D. Orbital strain

A. alkanes

C. alkyl amine

D. alkynes

A. tertiary alcohol

B. secondary alcohol

C. dihydric alcohol

B. Oxidize it

C. Separate volatile impurities

D. Obtain an alloy

B. Cone. HCI and anhydrous CaCl2

C. Cone. HCI and anhydrous PCl2

D. Cone. HCI and anhydrous SOCl2