Questions

In chemistry, the term transition metal has three possible meanings: The IUPAC definition defines a transition metal as "an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell".

Any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g. iron, manganese, chromium, and copper. Chemically they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.

Here in the given options, only iron (Fe) is a transition metal since Strontium is an alkaline earth, arsenic is a metalloid, hydrogen is (normally) a diatomic gas.

The processes in the controlling group are Verify Scope, Control Scope, Control Schedule, Control Costs, Perform Quality Control, Report Performance, Monitor and Control Risks, and Administer Procurements.

The 'sphinx' is a mythological animal with the body of a lion and the head of man. Each Sphinx was carved out of a single solid stone.

Upto now, India has won 28 medals in Olympics from 1896 - 2016. In that

Rio Olympics 2016  - 02

Beijing Olympics 2008 - 03

London Olympics 2012 - 06

Athens Olympics 2004 - 01

Hence, India has won most number of medals in 2012 Rio Olympics.

Envelope is a letter holder for one letter and in the question it mean that it holds one letter. Eye is also a word which starts and end with E but has one letter in the middle.

Pericles