Environmental Science and Engineering
2026 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ES 2026 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 13–15 of 65. Imported answers require review unless explicitly marked reviewed.
Question 13
Open questionESMCQ1 markNeeds review
Given
, the minimum value of
is ______.Your answerChoose one option.
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Open questionESMCQ1 markNeeds review
A box contains 26 cards with all English alphabets from A to Z.
The probability of randomly choosing the card with either ‘E’ or ‘S’ from this box is ______.
Your answerChoose one option.
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Open questionESMCQ1 markNeeds review
Which ONE of the following options is the CORRECT formula for Chi-Square (
) test?Given,
are the observed values,
are the corresponding expected values,
is the mean of observed values,
is the number of observations,
is the mean of
,
,
is the standard deviation of observed values, and
is the standard deviation of expected values
,
.Your answerChoose one option.
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