In thermodynamic processes which of the following statements is not true?

Option: 1

In an isochoric process pressure remains constant


Option: 2

In an isothermal process the temperature remains constant


Option: 3

In an adiabatic process PV\gamma = constant


Option: 4

In an adiabatic process the system is insulated from the surroundings


Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

Option: 1

Absence of secondary phloem


Option: 2

Presence of cortex


Option: 3

Position of protoxylem


Option: 4

Absence of secondary xylem


The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:

Option: 1

elongating


Option: 2

widening


Option: 3

differentiating


Option: 4

maturing


Transgenic plants are the ones:

Option: 1

generated by introducing foreign DNA into a cell and regenerating a plant from that cell.


Option: 2

produced after protoplast fusion in artificial medium.


Option: 3

grown in artificial medium after hybridization in the field.


Option: 4

produced by a somatic embryo in artificial medium.


The following compounds are given

a. CH3CH2OH

b. CH3COCH3

C. (CH3)2CHOH   

d. CH3OH

Which of the above compound(s), on being warmed with iodine solution and NaOH, will give iodoform?

Option: 1

a, c and d


Option: 2

Only b


Option: 3

a, b and c


Option: 4

a and b


A square current carrying loop is suspended in uniform magnetic field acting in the plane of the loop. If the force on one arm of the loop is \vec{\text{F}} the net force on the remaining three arms of the loop is

Option: 1

\vec{\text{F}}


Option: 2

3\vec{\text{F}}


Option: 3

-\vec{\text{F}}


Option: 4

-3\vec{\text{F}}


A conducting circular loop is placed in a uniform magnetic field, B = 0.025 T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of 1 mms-1. The induced emf when the radius is 2 cm is

Option: 1

\muV


Option: 2

2\pi\mu\text{V}


Option: 3

\pi\mu\text{V}


Option: 4

\frac{\pi}{2}\mu\text{V}


Which of the following pairs has the same size?

Option: 1

Zn2+, Hf4+


Option: 2

Fe2+, Ni2+


Option: 3

Zr4+, Ti4+


Option: 4

Zr4+, Hf4+


Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?

Option: 1

All are bilaterally symmetrical


Option: 2

Penguin is homoiothermic while the remaining three are poikilothermic


Option: 3

Leech is a fresh water form while all others are marine


Option: 4

Spongilla has special collared cells called choanocytes, not found in the remaining three


The genotype of a plant showing the dominant phenotype can be determined by

Option: 1

Back cross


Option: 2

Test cross


Option: 3

Dihybrid cross


Option: 4

Pedigree analysis


A common biocontrol agent for the control of plant diseases is

Option: 1

Trichoderma


Option: 2

Baculovirus


Option: 3

Bacillus thuringiensis


Option: 4

Glomus


Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme?

Option: 1

5' CACGTA 3';

3' CTCAGT 5'


Option: 2

5' CGTTCG 3';

3' ATGGTA 5'


Option: 3

5' GATATG 3';

3' CTACTA 5'


Option: 4

5' GAATTC 3';

3' CTTAAG 5'


The thermo e.m.f E in volts of a certain thermocouple is found to vary with temperature difference \Theta in ^{o}C between the two junctions according to the relation E=30\Theta -\frac{\Theta ^{2}}{15}

The neutral temperature for the thermocouple will be

 

Option: 1

30^{o}C


Option: 2

450^{o}C


Option: 3

400^{o}C


Option: 4

225^{o}C


Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?

Option: 1

Only one X chromosome


Option: 2

One X and one Y chromosome


Option: 3

Two X chromosome


Option: 4

Only one Y chromosome


A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 15 cm from the lens on the opposite side. If the lens is removed, the point where the rays meet will move 5 cm closer to the lens. The focal length of the lens is

Option: 1

-30 cm


Option: 2

5 cm


Option: 3

-10 cm


Option: 4

20 cm


The unit of rate constant for a zero order reaction is :

Option: 1

L2 mol-2 s-1


Option: 2

s-1


Option: 3

mol L-1 s-1


Option: 4

L mol-1 s-1


A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration 1.0 m/s2. If g = 10 ms-2, the tension in the supporting cable is:

Option: 1

1200 N


Option: 2

8600 N


Option: 3

9680 N


Option: 4

11000 N


In forward biasing of the p-n junction

Option: 1

The positive terminal of the battery is connected to p -side and the depletion region becomes thin


Option: 2

The positive terminal of the battery is connected to p-side and the depletion region becomes thick


Option: 3

The positive terminal of the battery is connected to n-side and the depletion region becomes thin


Option: 4

The positive terminal of the battery is connected to n-side and the depletion region becomes thick


Nitrifying bacteria

Option: 1

Reduce nitrates to free nitrogen


Option: 2

Oxidize ammonia to nitrates


Option: 3

Convert free nitrogen to nitrogen compounds


Option: 4

Convert proteins into ammonia


Which one of the following is the most widely accepted method of contraception in india, as at present ?

Option: 1

IUD's (Intra uterine devices)


Option: 2

Cervical caps


Option: 3

Tubectomy


Option: 4

Diaphragms


The sex of zygote gets decided during , the zygote formation sexuality of child depends 

Option: 1

Zygote carrying XY would be male 


Option: 2

Zygote carrying XX would be male 


Option: 3

Zygote carrying XX would be female 


Option: 4

Both (a)  and (c)


Offsprings of oviparous animals are at greater risk of survival as compared to those of  viviparous animals because

Option: 1

Proper embryonic care and protection is absent


Option: 2

Embryo does not develop completely.


Option: 3

Progenies are of smaller size

 


Option: 4

Genetic variations do not occour


The proponent of the theory of spontaneous generation was:

Option: 1

Louis Pasteur


Option: 2

Von Helmont


Option: 3

Spallanzani

 


Option: 4

Francisco Redi


Select the correct options for Australian realm:

Option: 1

It's over Australia and New Zealand only


Option: 2

The important animals are ceratodus, enya, kiwi etc.


Option: 3

It is one of the largest realm

 


Option: 4

Bothe (a) and (b)


Organ system level of organisation shown by:

Option: 1

Porifera


Option: 2

Coelentrata


Option: 3

Ctenophora

 


Option: 4

Platyhelminthes


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