Bihar Board Class 12 Chemistry complete in 1 months full tips to cover

In a class of 30 pupils, 12 Chemistry, 16 take Physics and 18 take History. If all the 30 students take at least one subject and no one take all three, then find the number of pupils taking 2 subjects.

Identify chiral and achiral molecules in each of the following pair of compounds. (Wedge and Dash representations according to Class XI, Fig. 12.1). ltbgt

A cistern has two inlets A and B which can fill it in 12 hours and 15 hours respectively. An outlet can empty the full cistern in 10 hours. If all the three pipes are opened together in the empty cistern, how much time will they take to fill the cistern completely?

Geeta had to make 24 pictures for the class board. She completed 6 pictures. What fraction of the pictures did she complete?

The minute hand of a clock is 3.5 cm long. What distance will its tip cover in 1 hour ?

A man borrows रु 5,000 at 12 percent compound interest payable every six months. He repays रु 1,800 at the end of every six months. Calculate the third payment he has to make at the end of 18 months in order to clear the entire loan.

A bob of mass m, suspended by a string of length l_1 is given a minimum velocity required to complete a full circle in the vertical plane. At the highest point, it collides elastically with another bob of mass m suspended by a string of length l_2 , which is initially at rest. Both the strings are mass-less and inextensible. If the second bob, after collision acquires the minimum speed required to complete a full circle in the vertical plane, the ratio (l_1)/(l_2) is

A bob of mass m, suspended by a string of length l_1 is given a minimum velocity required to complete a full circle in the vertical plane. At the highest point, it collides elastically with another bob of mass m suspended by a string of length l_2 , which is initially at rest. Both the strings are mass-less and inextensible. If the second bob, after collision acquires the minimum speed required to complete a full circle in the vertical plane, the ratio (l_1)/(l_2) is

Which of the following statement is incorrect for the epidermis? (1) It is the outermost layer of the primary plant body. (2) It is often covered by cuticle externally (3) It is usually multilayered. (4) It is made up of completely arranged cells.

How many tiles whose length and breadth are 12 cm and 5cm respectively will be needed to cover a rectangular region whose length and breadth are respectively : 1 m and 144 cm .