GATE life Sciences Study Materials

GATE XL 2018 Chemistry Solved Question Paper with Answer Key


GATE Chemistry Old Question Papers

Official / Original Previous Year (Old) Solved Question Paper of GATE Life Sciences (XL) 2018 (Chemistry) with Answer Key and Explanations as PDF. GATE XL aspirants can download the question paper as single PDF file for your exam preparation. Please feel free to inform us for any mistakes in the answer key provided.

To download the question paper, please click on the download link below the preview…


GATE XL Model Questions GATE XL Previous Year Papers


Continue reading

Difference between Covalent Bond and Hydrogen Bond – Comparison Table


Compare covalent and hydrogen bond

Covalent Bond vs Hydrogen Bond
(Similarities and Differences between Covalent Bond and Hydrogen Bond)

The chemical bonds are stable attractions between atoms, ions or molecules. The formation of chemical bonds allows the formation of molecules or compounds. Chemical bonds are classified into different categories based on their formation and strength. They are categorized as Covalent bonds, Ionic bonds, Metallic bonds, Dipole-dipole interactions, London dispersion forces and Hydrogen bonds. The present post discusses about the Differences between the Covalent bond and Hydrogen bond with a Comparison Table.

Covalent bond is a primary chemical bond formed by the sharing of electron pairs. Covalent bonds are strong bonds with greater bond energy.

Hydrogen bond is a weak electrostatic attraction between the hydrogen and an electronegative atom due to their difference in electronegativity. Individual hydrogen bonds are weak bonds however, their presence in large number provide them considerable strength.

Learn more: Covalent Bond vs Ionic Bond

Learn more: Covalent Bond vs Metallic Bond

Continue reading

Difference between Covalent Bond and Ionic Bond: Comparison Table


Compare Covalent and Ionic Bonds

Covalent Bonds vs Ionic Bonds
(Similarities and Differences between Covalent Bonds and Ionic Bonds)

The chemical bonds are stable attractions between atoms, ions or molecules. The formation of chemical bond allows the formation of molecules or compounds. Chemical bonds are classified into different categories based on their formation and strength. Important types of chemical bonds recognized are Covalent bonds, Ionic bonds, Metallic bonds, Dipole-dipole interactions, London dispersion forces and Hydrogen bonds. The present post discuss about the Similarities and Differences between the Covalent bond and Ionic bond with a Comparison Table.

Covalent bond: A chemical bond formed by the sharing of electron pairs.

Ionic bond: A chemical bond formed by the electrostatic attraction between oppositely charged ions.

Similarities between Covalent Bond and Ionic Bond

Ø  Both covalent and ionic bonds are strong bonds.

Ø  Both are primary bonds.

Ø  Both bonds result in the formation of complex structures.

Ø  The formation of both covalent and ionic bonds results in the formation of more stable compounds than the original.

Ø  Formation of covalent and ionic bonds is exothermic.

Ø  Compounds formed by both covalent and ionic bonds will have net neutral charge.

Ø  Compounds with both covalent and ionic bonds are not malleable.

Continue reading