Of three persons A, B and C, one always lies while the others always speak the truth. C asked A, "Do you always speak the truth, yes or no?" He said something that C could not hear. So, C asked B, " what did A say?" B replied, "A said No". so, who i the liar?

• A

• B

• C

• Cannot be determined

Two ants, initially at diametrically opposite points A and B on a circular ring of radius R,, start crawling towards each other. The speed of the one at A is half of that of the one at B. The point at which they meet is at a straight line distance of

• R from A

• $\frac{3\mathrm{R}}{2}$ from A

• R from B

• $\frac{3\mathrm{R}}{2} \mathrm{from} \mathrm{B}$

Based on the graph, which of the following statements is NOT true?

• Number of gold medals increased whenever total number of medals increased.

• Percentage increase in gold medals in 2010 over 2006 is more than the corresponding increase in total medals.

• Every time non-gold medals together account for more than 50% of the total medals.

• Percentage increase in gold medals in 2010 over 2006 is more than the corresponding increase in 2002 over 1998.

A pyramid-shaped toy is made by tightly placing cubic blocks of 1 × 1 × 1 cm³. The base of the toy is a square 4 × 4 cm². The width of each step is 0.5 cm. How many blocks are required to make the toy? 

• 30

• 34

• 36

• 40

Two plane mirrors facing each other are kept at 60° to each other. A point is located on the angle bisector. The number of images of the point is

• 6

• 3

• 5

• Infinite

I bought a shirt at 10% discount and sold it to a friend at a loss of 10%. If the friend paid Rs. 729.00 for the shirt, what was the undiscounted price of the shirt?

• Rs. 900

• Rs. 800

• Rs. 1000

• Rs. 911.25

A single celled spherical organism contains 70% water by volume. If it loses 10% of its water content, how much would its surface area change b approximately?

• 3%

• 5%

• 6%

• 7%

Suppose

(1) x = 4

(2) Then x - 4 = x² - 4² (as both sides are zero)

(3) Therefore, (x - 4) = (x - 4)(x + 4). Cancelling (x - 4) from both the sides.

(4) 1 = (x + 4)

(5) Then x = -3

Which is the wrong step?

• 1 to 2

• 2 to 3

• 3 to 4

• 4 to 5

A researcher would like to monitor changes in the level of a serum protein for which an antibody is available. Which one of the following methods would be best suited for the purpose?

• Immunofluorescence microscopy

• Fluorescence in situ hybridization

• Enzyme-linked immunosorbent assay

• Fluorescence-activated cell sorting

Which one of the methods listed below is the most sensitive label-free quantification method for proteins?

• UV spectroscopy

• Infra-red spectroscopy

• Raman spectroscopy

• ¹³C content of protein