EASY
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Which of the following is an example of homogeneous mixture?
 

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Important Questions on Some Basic Concepts of Chemistry

MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
What is the density of water vapour at boiling point of water?
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

Pressure is measured terms of:

1. Mass and Density

2. Work Done

3. Force and Area

4. Force and Distance

HARD
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
0.27 g of a long chain fatty acid was dissolved in 100 cm3 of hexane. 10 mL  of this solution was added dropwise to the surface of water in a round watch glass. Hexane evaporates and a monolayer is formed. The distance from edge to centre of the watch glass is 10 cm . What is the height of the monolayer?
[Density of fatty acid =0.9 g cm-3;π=3] 
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Average power equals to _____:
 
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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Which among the following elements is a metalloid?
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

What is the SI unit of Voltage?

EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
What is the SI unit of Pressure?
HARD
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
A hot air balloon with a payload rises in the air. Assume that the balloon is spherical in shape with diameter of 11.7 m and the mass of the ballon and the payload (without the hot air inside) is 210 kg Temperature and pressure of outside air are 27°C and 1 atm =105 N/m2, respectively. Molar mass of dry air is 30 g. The temperature of the hot air inside is close to [The gas constant, R=831JK-1 mol-1 ]
 
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
The correct order of the metallic character of the elements Be,Al,Na,K is
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Which of the following represents the correct order of metallic character of the given elements?
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
For a family, there are 150 units consumption of energy, what is the value of this consumption in Joule? 
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Urea is produced by metabolism of _____. 
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
1 Pound = ________ Ounces.
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

What is the unit used to measure distances between celestial objects?

MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
What is the unit of conductance? 
HARD
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
What is measured with the Nephometer?
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

The temperature of an object is 60°C. Its value in Fahrenheit scale is

MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
An organic compound contains 60%C; 4.48%H and 35.5% O. Its empirical formula is
HARD
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Cl- is not isoelectronic with
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
A compound is formed by two elements X and Y. Atoms of element Y form hexagonal close packing (hcp) lattice and those of the elements X occupy (2/3)rd of tetrahedral voids. The formula of the compound formed by the elements X and Y is