GATE Questions

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Sound waves cannot be transmitted through vacuum. 

Shillong is the capital city of Meghalaya state in India. It is well known tourist place as a hill station in northeast India which attracts tourists all over the world.

Article 87 is related to Special Address by the president.

Other Articles Relate to :

Article 84 - Qualification for membership of Parliament.

Article 85 - Sessions of Parliament, prorogation and dissolution.

Article 86 - Right of President to address and send messages to Houses.

The objects through which light cannot pass are called as Opaque objects. Some objects allow some light to pass through them and are called as Translucent objects. The objects which allow all the light to pass through them are called as Transparent objects.

Here in the given options Book is an example of opaque object as it does not allow light to pass through it. Water is transparent object and notebook paper and sun glasses are examples of translucent objects.

The place where the river meets the sea or ocean is called as Estuary.

Oxygen deficiency or decreased oxygen levels in the blood is a condition known as Hypoxemia.

Hypercapnia means High carbon dioxide levels in the blood.

Siachen is a glacier frontier zone between India and Pakistan.

When heated any substance, the molecules move apart from each other. Alike in the air the molecules move apart from each other. We know that the warm air is lighter than the cool air. Since after heating air gets warmer, it floats up and the cool air comes down to occupy the warm air place.