What fraction of Rajya Sabha members retire after every two years?

Consider the following vocal forms of music:

1. Thumri
2. Tarana
3. Melakarta
4. Khyal
5. Ghazal

Which of the above is/are style(s) of Hindustani Classical Music?

In context with the heavenly bodies, which among the following shows “lighthouse effect”?

In context with banking, a Certificate of Deposit is ___:

The 97th amendment of the Constitution has made the following provisions with respect to the Cooperatives?

1. Reservation of SCs and STs in Cooperatives
2. Fixed term of elections to cooperatives
3. Fixed maximum number of directors
4. Mandatory audit

Select the correct option from the codes given below: