The function of ball bearings in a wheel is
to increase friction
to convert kinetic friction into rolling friction
to convert static friction into kinetic friction
just for convenience
B.
to convert kinetic friction into rolling friction
The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organisms is
4-6
2-4
8-10
12-16
The addition of gypsum to portland cement helps in
increasing the strength of cement
rapid setting of cement
preventing rapid setting of cement
reduction in the cost of cement
White lung disease is prevalent among the workers of
Paper Industry
Cement Industry
Cotton Industry
Pesticide Industry
According to the latest 'Education Development Index' based on a series of surveys conducted by the National University of Education, Planning and Administration and released in February, 2011, the state with the highest Development Index is
Tamil Nadu
Kerala
Punjab
Gujarat
Which of the following could be used as fuel in propellant or rockets?
Liquid Hydrogen + Liquid Nitrogen
Liquid Oxygen + Liquid Argon
Liquid Nitrogen + Liquid Oxygen
Liquid Hydrogen + Liquid Oxygen
Indian Army's Operation 'Saiyam' was related to
Kashmir
Indo-China Border in the Central Region
North-East
Indo-Pak Border in Punjab and Rajasthan
The constituents of automobile exhaust that can cause cancer is/are
Oxides of nitrogen
Carbon monoxide
Polycyclic hydrocarbons
Lead
The world's only floating national park is situated in
Manipur
Kuala Lumpur
Bilaspur
Dispur