Which of the Programming Language is not in use

Which of the following diseases is not caused by mosquitoes?

Which article of the Indian Constitution provides for the establishment of a High Court in each state?

The tilt of the earth’s rotation relative to the ecliptic as earth revolves around the sun

A. The varying amount of sunspot activity

What is a foreign key in a relational database?

An amount of Rs. 500 received from a customer has been debited to his account. This error is classified as: 

What percentage of the recorded votes must be in favour of the amalgamation proposal of a trade union under the “Trade Union Act 1926”?

Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? 

(1) Dispersion

According to Dunlop, an industrial relations system comprises: