List of top Questions asked in GAT-B- 2023

Which of the following bacterium is generally used in plant genetic engineering?
Which of the following is NOT a preparative purification method for recovering protein product after fermentation?
A fraction becomes $\frac{9}{11}$ if 2 is added to both the numerator & the denominator. If 3 is added to both the numerator and denominator, the fraction becomes $\frac{5}{6}$. Find the fraction.
Two fair cubical dice with faces numbered from 1 to 6 are rolled. What is the probability that the sum of the numbers on the two faces that appear on the top is 8, given that each of the two faces that appear on the top shows an odd number?
Pipe A can fill a tank three times faster than Pipe B. If together the two pipes can fill the tank in 36 minutes, then Pipe B alone will be able to fill the tank in
Which two operation signs need to be interchanged to make the following equation correct? \[ 73 - 13 \times 42 \div 14 + 56 = 56 \]
A basket contains 4 red, 5 blue and 3 green marbles. If 3 marbles are picked at random, what is the probability that either all are green or all are red?
Robin could get equal number of Rs. 55, Rs. 85 and Rs. 105 category tickets for a movie. He spent Rs. 2940 for all the tickets. How many tickets of each category did he buy?
A man spends 75% of his income. If his income increases by 20% and his expenditure increases by 10%, then the percentage of increase in his saving would be
Rohit has some hens and some goats. If the total number of animals is 90 and the total number of animal feet is 248. What is the total number of goats Rohit has?
The perimeter of the top of a rectangular table is 28 m, whereas its area is 48 m$^2$. What is the length of its diagonal?
Triangle ABC is a right angled triangle, right angled at B. If lengths of AB and BC are 60 cm and 80 cm respectively, and BD is an altitude of triangle ABC, then find the length of AD in cm.
Which two gases together contribute maximally to global warming?
Ramesh has four friends. In how many ways can he invite one or more of them for dinner?
Which of the following is NOT a secondary lymphoid organ?
The ratio of the incomes of two persons is $9:7$ and the ratio of their expenditure is $4:3$. If each of them manages to save Rs. 2000/- per month, find their monthly income.
Drosophila melanogaster is suitable for genetic studies because A. male and female flies are easily distinguishable
B. the life cycle is completed in about three weeks
C. a single mating produces large progeny
D. phenotypic variations can be seen with low magnification microscope Choose the correct answer from the options given below:
How are healthy plants recovered from diseased plants using plant tissue culture?
Plants which are genetically identical to the original plant from which they are grown are called as
The separation and purification of the biological product after completion of the biosynthetic stage in a bioprocess is known as
Find the least number which when divided by 16, 18, 20 and 25 leaves 4 as remainder in each case but when divided by 7 leaves no remainder.
Match List - I with List - II.
Choose the most appropriate match from the options given below:
Which one of the following is an autosomal dominant disorder?
Match List - I with List - II.
Choose the most appropriate match from the options given below:
Identify the correct statement with respect to linkage and recombination frequency.