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Which gas is fixed by Rhizobium bacteria present in the root nodules of a pea plant ?


The formation of sulphurous acid involves ?

The acid present in soft drinks is ?

The cathode of a dry cell is made of ?

The number of atoms present in the molecule of an element is known as its?


If the angle of incidence formed by a ray of light on a plane mirror is 37°, then the angle of refraction is?

A dynamo converts ?

If the time taken for hearing the echo of a girl's voice after reflection from a cliff is 6 seconds, calculate the distance of the girl from cliff ?

The physical quantity corresponding to the rate of change of displacement is..............?

Work done is said to be zero when an object moves at an angle of ............with respect to the force applied ?

Indian Geography

In terms of area, India is the ........largest country in the world ?

Indian Politics

How many members from the Anglo Indian community are nominated to the Lok Sabha?

Which of the following parts of the Constitution of India provides fundamental rights ?

Time and Work

Ram could complete a job alone in 6 days but Sunil would take thrice the time to do it alone.They started the work together but Ram had to leave a few days before the completion of the work and Sunil had to complete the remaining task by himself. If as a result , it took 6.75 days in all to complete the job, for how many days did the duo work together?

Profit and Loss

The cost price of 20 articles is equal to the selling price of 16 articles. Find the gain or loss percent?


Successive discount of 10% and 10% are equivalent to a single discount of ?

A discount series of 10%, 20% and 40% is equal to single discount of ?

Pepsi and Coke, there are two companies, selling the packs of cold­drinks. For the same selling price Pepsi gives two successive discounts of 10% and 25% on marked price, while Coke sells it by giving two successive discounts of 15% and 20% on marked price. What is the ratio of their marked price?