geonick

1.Brass gets discoloured in air because of the presence of which of the following gases in air?

A. Oxygen B. Hydrogen sulphide C. Carbon dioxide D. Nitrogen

2.Which of the following is used in pencils?

3.Chemical formula for water is ?

A. NaAlO2

B. H2O

C. Al2O3

D. CaSiO3

( 3 n + 2 ) ( n + 3 )

Let entries of n × n matrices A, B be functions in one variable x. Prove that where derivative of a matrix is defined by .

F varies directly with m m and inversely with the square of d . If F=120 when m=120 and d=2 , find F when m=320 and d=4 .

If you are a philosopher then what topic will you chose for philosophy?

What is psychology?

Which pair of angles shares ray AF as a common side?

Find the laplace transformation of cos ² wt

Solve the following differential 

dx/dt= t³/(x²+1)

derivative of y=2x+24

35 as a fraction

There are 49 dogs signed up for a dog show. There are 36 more small dogs than large dogs. How many small dogs have signed up to compete? This question comes directly from a second grader's