Science and Technology

who invented fountain pen

• Amundsen

• J.B.Pristley

• Watermann

• L.Daguerre

Who invented Revolver

• Colt

• J.C.Bose

• Soles

• Max Planck

When Chandrayaan 1 was launched

• 10 September, 2009

• 22 October, 2008

• 34 June, 2008

• 25 October, 2008

How many types of lever are there?

• 2

• 4

• 7

• 3

MOM full form

What are three parts of lever?

1 Load

2 Effort

3 ?

Is a wheel barrow, lever?

• False

• True

Who invented Chrystal Dynamics

• Dr. Hargovind Singh Khorana

• J.C Bose

• C.V.Raman

• Colt

Boiling Point of Acetone

• 123 degree

• 56 degree

• 57 degree

• 100 degree

Formula of Salt