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Physical Chemistry
The molecule having non-zero dipole moment is-
A)H2O2 B)CH4 C)C2H6 D)BF3 E)B2H6
Which of the following has zero dipole moment?
A)H2O B)PCl3 C)SiF4 D)CFCl3
How I choose the correct option of the above type of questions easily wthin one minute in competitive exam?Please sir tell me the short way of thinking.
A)H2O2 B)CH4 C)C2H6 D)BF3 E)B2H6
Which of the following has zero dipole moment?
A)H2O B)PCl3 C)SiF4 D)CFCl3
How I choose the correct option of the above type of questions easily wthin one minute in competitive exam?Please sir tell me the short way of thinking.
Physical Chemistry
Sodium crystallizes in BCC unit cell. Calculate the approximate no. of unit cells in 9.2 g of sodium (Na = 23)
Physical Chemistry
Define the following terms and indicate units in which they are normally expressed,
1. Density
2. Specific heat
3. Thermal conductivity
In each case state how a low numerical value for the property would affect the ease with which a solid can be ignited
b. What are units of energy and power
c. Electric lighting is often overlooked as a potential source of ignition. List factors that might lead to a light fitting becoming an ignition source.
d. Discuss why the use of electrical adaptors and extension leads in workplace should be minimized.
1. Density
2. Specific heat
3. Thermal conductivity
In each case state how a low numerical value for the property would affect the ease with which a solid can be ignited
b. What are units of energy and power
c. Electric lighting is often overlooked as a potential source of ignition. List factors that might lead to a light fitting becoming an ignition source.
d. Discuss why the use of electrical adaptors and extension leads in workplace should be minimized.
Physical Chemistry
21.6g of silver coin is dissolved in HNO3.when NaCl is added to this solution ,all silver is precipitated as AgCl.the weight of AgCl is found to be 14.35g then what will be the % of silver in coin?
Physical Chemistry
If you were to investigate crystal structure changes as a function of pressure, which metals would you study first? Last? Why?
Physical Chemistry
In a compound XY2O4,oxide ion are arranged in ccp&cation x are present in octahedral voids.cation Yare equally distributed between octahedral &tetrahedral void .what fraction of total voids is occupied by X &Y
Physical Chemistry
Carbon dioxide was taken in an enclosed cylinder and compressed by applying pressure.
(1)Which state of matter will be obtained after completion of the process?
(2)Name and define the process?
(3)Why do people sprinkle water on the roof after a hot summer day?
(1)Which state of matter will be obtained after completion of the process?
(2)Name and define the process?
(3)Why do people sprinkle water on the roof after a hot summer day?
Physical Chemistry
Define the following terms and and indicate units in which they are normally expressed,
1. Density
2. Specific heat
3. Thermal conductivity
In each case state how a low numerical value for the property would affect the ease with which a solid can be ignited
1. Density
2. Specific heat
3. Thermal conductivity
In each case state how a low numerical value for the property would affect the ease with which a solid can be ignited
Physical Chemistry
Would it be more hazardous to spill petrol or diesel fuel on to a hot vehicle exhaust pipe? Explain your reason briefly
Physical Chemistry
4g naoh was added with 20 cc of 2N HCl and was diluted to 1litre. predict nature of resulting soln and find its normality
