Questions

True, The luster of a metal is due to presence of free electrons. Luster means shine or soft glow. We know that metals have the quality of reflecting light from its surface.

A river which can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps.

The IT ministry launched a desktop software e-Aksharayan in a conference for Indian Languages Technology Industry 'Bhashantara', in New Delhi. The objective is to enable editing and printing of text in scanned documents. The software e-Aksharayan was launched in 7 Indian languages.

Any object rolls when there is no friction. So, Sliding to Rolling is correct.

Here in the given options, Gold is a malleable substance.

Malleable substance means a metal or a material able to be hammered or pressed into shape without breaking or cracking. i.e, tensile.

DNA is copied during a process called Transcription. It is the first step of gene expression, in which a particular segment of DNA is copied into RNA by the enzyme RNA polymerase.

The United Nations (UN) has declared 2017 as the "International Year of Sustainable Tourism for Development" to celebrate and advance the commitment of the tourism division to building a superior world.The International Year aims to support a change in policies, business practices and consumer behavior towards a more sustainable tourism sector that can contribute effectively to the Sustainable Development Goals (SDGs).

Manila is the capital of Philippines