Test Preparation on GATE Chemistry Mock Test-2

“Going by the _________ that many hands make light work, the school _______ involved
all the students in the task.”
The words that best fill the blanks in the above sentence are

“Her _______ should not be confused with miserliness; she is ever willing to assist those in
need.”
The word that best fills the blank in the above sentence is

Seven machines take 7 minutes to make 7 identical toys. At the same rate, how many
minutes would it take for 100 machines to make 100 toys?

A rectangle becomes a square when its length and breadth are reduced by 10 m and 5 m,
respectively. During this process, the rectangle loses 650 m2 of area. What is the area of the
original rectangle in square meters?

A number consists of two digits. The sum of the digits is 9. If 45 is subtracted from the
number, its digits are interchanged. What is the number?

For integers ?, ? and ?, what would be the minimum and maximum values respectively of
? + ? + ? if log |?| + log |?| + log |?| = 0?

Given that ? and ? are integers and ? + ?² ?³ is odd, which one of the following
statements is correct?