Which of the following statement(s) is/are correct about the ‘steel slag roads’?

1. These roads cannot be used to carry heavy-duty vehicles.
2. Steel slag roads require more thickness than roads made from other natural aggregates in order to carry weight of similar quantities.
3. They are costly than the roads made using natural aggregates.

Recently, the ‘Vanniyar movement’ has been in news. It belongs to -

Which of the following statements is/are correct about the Index of Industrial Production?

1. It is published monthly with a time lag of six weeks.
2. It is published by the Central Statistics Office (CSO) of the Ministry of Statistics and Programme Implementation.

Which of the following statement(s) is/are correct about the ‘Index of Eight Core Industries (ICI)’?

1. It is a lead indicator of the monthly industrial performance.
2. It is compiled by the Central Statistics Office on behalf of the Ministry of Commerce and Industry every month.
3. The index is calculated using Laspeyre’s formula of weighted arithmetic mean.

Which component of the ‘core industries’ holds maximum weight in the Index of Industrial Production?