Questions

Propene, being an alkene, and propyne, being a alkyne, are distinguished using the common chemical tests namely ammoniacal silver nitrate or ammoniacal cuprous chloride. Ammoniacal silver nitrate is also called as Tollen's reagent.

PMVVY (Pradhan Mantri Vaya Vandana Yojana) pension limit extends to March, 2020.
The Union Cabinet, chaired by Prime Minister Narendra Modi approved extending the investment limit from Rs 7.5 lakh to Rs 15 lakh under the Pradhan Mantri Vaya Vandana Yojana (PMVVY).
It also extended the last date for a subscription to the scheme till March 31, 2020. The time limit was earlier supposed to end on May 4, 2018.
The PMVVY is being implemented through Life Insurance Corp (LIC) to provide social security during old age and protect the elderly aged 60 years and above against a future fall in their interest income due to uncertain market conditions. The scheme provides an assured pension based on a guaranteed rate of return of 8 percent per annum for 10 years.

In economics, there are four factors of production. They are :

1. Land

2. Labour

3. Capital

4. Organization

Here in the given options, a construction crane acts like capital.