Assertion : We Air Is Heavier Than Dry Air. Reason : The Density Of A Dry Air Is More Than Density Of Water.
5 Years Ago
Contribute & Test Your Skills
- Some Basic Concepts in Chemistry
- States of Matter
- Atomic Structure
- Chemical Bonding & Molecular Structure
- Chemical Thermodynamics
- Solutions
- Equilibrium
- Redox Reactions & Electrochemistry
- Chemical Kinetics
- Surface Chemistry
- Purification & Characterisation of Organic Compounds
- Hydrocarbons
- Chemistry in Everyday Life
- Principles Related to Practical Chemistry
- Organic Compounds Containing Halogens
- Organic Compounds Containing Oxygen
- Organic Compounds Containing Nitrogen
- Alcohol, phenol & Ether
- Organic Chemistry Principles
- Biomolecules & Polymers
- Classification of Elements & Periodicity in Properties
- Hydrogen
- S & P block Element
- D & F - Block Elements
- Co-Ordination Compounds
- Environmental Chemistry
- General Principles & Processes of Isolation of Metals
- JEE Chemistry Discussions
- Aldehydes, Ketones & Carboxylic Acid
- Nuclear Chemistry
- Atom & Molecules
- Redox Reaction
- Aromatic Hydrocarbons
- Halogen Derivatives
- Carboxylic Acids & Derivatives
- Nitrogen Containing Compounds
- Bio Molecules
- Chemistry In Action
- Extraction of Metals
- Chemical Analysis
- Ores, Minerals and Metallurgical Extraction
Popular Questions
- Equal amounts of two gases of molecular weight 4 and 40 are mixed. The pressure of the mixture is 1.1 atm. The partial pressure of..
- Molecules/ions and their magnetic properties are given below
- Assertion : We air is heavier than dry air. Reason : The density of a dry air is more than density of water.
- Assertion : Effusion rate of oxygen is smaller than nitrogen. Reason : Molecular size of nitrogen is smaller than oxygen.
- A weather ballon filled with hydrogen at 1 atm and 27° C has volume equal to 12000 litres. On ascending it reaches a place wher..
- Assertion : 4.58mm and 0.0098°C is known to be triple point of water. Reason : At this pressure and temperature all the three s..
- Assertion : All molecules in a gas have same speed. Reason : Gas contains of different size and shape
- A particular solid is very hard and has a high melting point. In solid state it is a non conductor and its melt is a conductor of ..
- in van der waals equation of state of the gas law, the
- Which one of the following Statements is not correct about the three states of matter i.e. solid, liquid and gaseous
- A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely dis..
- in van der waals equation of state for a non - ideal gas , the
- the compressibility factor a real gas at high pressure is
- The 8 : 8 type of packing is present in
- Davy and Faraday proved that
- The root mean square speeds at STP for the gases H2 , N2 ,O2 and HBr are in the order
- In a cubic structure of diamond which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres..
- Which of the following relations for expressing volume of a sample is not correct
- Which type of solid crystals will conduct heat and electricity
- The characteristic features of solid are
- For orthombic system axial ratios are a#b#c and the axial angles are
- Which one of the following is good conductor of electricity
- In the solid state, MgO has the same structure as that of sodium chloride. The number of oxygens surrounding each magnesium in MgO..
- A compound is formed by elements A and B. This crystallises in the cubic structure where the A atoms are at the corners of the cub..
- A solid compound contains X , Y and Z atoms in a cubic lattice with X atom occupying the corners. Y atoms in the body centred posi..
- A solid has a structure in which, atoms of W, O and Na are located respectively at the corners, centre of edge and at the centre o..
- Pressure remaining the same, the volume of a given mass of an ideal gas increases for every degree centigrade rise in temperature ..
- At constant temperature,in a given mass of an ideal gas
- A crystalline solid have
- The ability of a given substance to assume two or more crystalline structure is called
- With which one of the following elements silicon should be doped so as to give p-type of semiconductor
- if 10^4 dm ^3 of water is introduced into a 1.0 dm^3 flask at
- Dulong and Petits law is valid only for
- If the pressure and absolute temperature of 2 litres of CO2 are doubled, the volume of CO2 would become
- Quartz is are crystalline variety of
- The substance which does not show sharp melting point is
- the molecular velocity of any gas is
- Silicon is
- An element having an atomic radius of 0.14 nm
- The number of carbon atoms per unit cell of diamond is
