Questions

Mutex is the short form for ‘Mutual Exclusion object’. A mutex allows multiple threads for sharing the same resource. The resource can be file. A mutex with a unique name is created at the time of starting a program. A mutex must be locked from other threads, when any thread that needs the resource. When the data is no longer used / needed, the mutex is set to unlock.

A 40% solution of Formaldehyde known as Formalin is used in the preservation of biological specimens because of its hardening action on proteins. 

In keeping with Prime Minister Narendra Modi's vision of a 'New India', Google India and the Ministry of Electronics and Information Technology (MEITY) announced a set of initiatives aimed at empowering citizens and creating abundant oppurtunities for all.

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

In all the given options, the countries are correctly matched with their National games.

USA - Baseball

Pakistan - Field Hockey

China - Table Tennis.

An excise or excise tax or excise duty is a type of tax charged on goods produced within the country (as opposed to customs duties, charged on goods from outside the country). It is a tax on the production of a good. This tax is now known as the Central Value Added Tax (CENVAT).