A firm has to transport 1200 packages using large vans which can carry 200 packages each and small vans which can take 80 packages each. The cost for engaging each large van is Rs.400 and each small vans is Rs.200 not more than Rs.3000 is to be spend on the job and the number of large vans can not exceed the number of small vans. formulate the problem as a LPP given that the objective is to minimise cost. also solve this LPP graphcially to find the minimum cost.

A company manufactures two types of sweaters type A and type B. If costs Rs. 360 to make a type A screws Rs.120 to make a type B sweater. The company can make if at most 300 sweaters and spend at most Rs.72000 a day. The number of sweaters of type B cannot exceeds number of sweater of type A by more than 100. the company makes it a profit of Rs.200 for each sweater of type A and Rs.120 for every sweater of type B. formulate this problem as an LPP to maximise to profit to the company. also solve this LPP to find the maximum profit.

That planet will have large value of g which has large value of mass and small value of radius (T or F)

The total cost of 4 bats and 2 balls is Rs 1800. If bat costs Rs 300 more than the ball, find the cost of each bat and each ball.

Name two metals which can be refined by Van Arkel method.

State the principle of Van de Graaff generator.

A shopkeeper sells mangoes in two types of boxes, one small and one large. A large box contains as many as 8 small boxes plus 4 loose mangoes. Set up an equation which gives the number of mangoes in each small box. The number of mangoes in a large box is given to be 100.

For a gas obeying the van der Waals' equation, at the critical point

Write short note on van Arkel method of refining of metals.