Pumice is the name of the most common volcanic rock that floats. It has various air bubbles and capillaries which trap air. Which statement is correct for this rock

• Air cavities are interconnected

• Air cavities are not connected

• Density of rock is more than water

• Rock is very older

The cumulative profits of a company since its inception are shown in the diagram. If the net worth of the company at the end of 4th year is 99 Crores, the principal it had started with was:

• 9.0crores

• 99 crores

• 90 crores

• 9.9 crores

Exposing an organism to a certain chemical can change nucleotide bases in a gene, causing mutation. In one such mutated organism if a protein had only 70% of the primary amino acid sequence, which of the following is likely?

• Mutation broke the protein

• The organism could not make amino acid

• Mutation created a terminator codon

• The gene was not transcribed

4.

The speed of a car increases very minute as shown in the following table. The speed at the end of the 19^th minute would be

Times (minutes)	Speed(m/sec)
1	1.5
2	3.0
3	4.5
-	-
-	-
24	36.0
25	37.5

  

• 26.5

• 28.0

• 27.0

• 28.5

The correct configuration for given structure is :

• L-configuration

• D-configuration

• R-configuration

• S-configuration

What amount has to be taken from 11 N HCl to make 50 mL of 2N HCl :

• 11.0 mL

• 9.09 mL

• 6.03 mL

• 2.0 mL

Slope of line in given plot will be

• -1

• -1/2

• +1/2

• 2

If a reactangle is inscribed in circle of diameter 'D'. Then the area of rectangle will be: 

• Independent of length and breadth

• Will be always smaller than D²/2

• Will be always smaller than D²/4

• Will be always greater than D²/4

Temperature above which gas cannot be liquified even by applying pressure is termed as-

• Critical temperature

• Boyle temperature

• Curie temperature

• Charles temperature

How many σ bond are present in the following molecules?

                      HC≡CCH=CHCH₃

• 4

• 10

• 6

• 13