Explanation : A definitive conclusion is given decisively, with confidence and authority; and without any ambiguity, vagueness or uncertainty. This is possible only when there is definitive evidence to support the conclusion reached. So, Assertion (A) is false. A statistical test of significance is a formal procedure for comparing observed data with the hypothesis, to verify whether it is true. It helps the researcher in drawing logically correct inferences from the data. So, Reason (R) is true.
Explanation : A journal/diary is a personal record of news and events made on a regular basis. In educational institutions, student journals are a specific assessment tool teachers can use to examine student learning in the affective and cognitive domains. Journa1ing provides a non-threatening platform for students to communicate/ express their thoughts and ideas; a confess their struggles and fears without judgment or punishment. It relieves stress when one gets all of those cluttered
or disturbing thoughts and feelings out of one's mind and down on paper.
Explanation : Refer to the Square of opposition shown
Propositions are contradictory when the
truth of one implies the falsity of the other,
Propositions are contrary when they
cannot both be true; hot both can be false.
Propositions are subcontrary when it is impossible for both to be false; but both
can be true.
Two propositions are said to stand-in
the relation of subaltematio1l when the
truth of the first (the superaltern) implies
the truth of the second the subaltern), hot
Explanation : Bhopal Gas Tragedy occurred on the cold wintry night in the early hours of 3 December, 1984. It was estimated that 40 tonnes of Methyl Isocyanate (MIC) gas leakage took place with some other toxic chemicals from the Union Carbide Factory. Thousands of people lost their lives in this disaster.
The Chernobyl disaster was a nuclear accident that occurred on Saturday 26 April 1986, at the No.4 nuclear reactor in the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the Ukrainian SSR.
One of the most famous and important examples of groundwater pollution in the U.S. is the Love Canal tragedy in Niagara Falls, New York. In the 1920s Niagara Falls began dumping urban waste into Love Canal, and in the 1940s the U.S. Army dumped waste from World War II there, including waste from the frantic effort to build a nuclear bomb.
Los Angeles Smog tragedy was a type of air pollution characterized by high levels of ozone and low visibility. It contains photochemical smog. Peroxyacyl nitrates or PANs are a component of photochemical smog