Exams

There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?

Select the missing number?

What is the effective discount (in %) on two successive discounts of 20% and 10%?

The surface area of a sphere is 5544 cm2. Find its diameter (in cm).

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

P: They feel that during their time, young boys and girls were better behaved, more obedient, and had greater respect for their elders.
Q: Young people on the other hand, feel that they are capable enough to learn on their own rather than lean heavily on the older generation for any guidance.
R: The people belonging to the older generation always wonder as to what has gone wrong with the new generation.
S: They feel that a lack of respect for the old will ruin and spell disaster for the young.

Acacia arabica is the scientific name of

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

The external and the internal radii of a hollow right circular cylinder of height 15 cm are 6.75 cm and 5.25 cm respectively. If it is melted to form a solid cylinder of height half of the orignal cylinder, then the radius of the solid cylinder is