Neeta Duseja

In the morning when the sun rises plants open their stomata by

a=pumping H2O out of the guard cells

b=pumping H2O into the guard cells

c=pump K+ ion into the guard cells

d=pump K+ ion out of the guard cells

If the sequence of nucleotides on mRNA template is AUCGUA then the sequence of newlysynthesized DNA strand would be

a = UAGCAU

b = AUCGUA

c = TAGCAT

d = TTCGTT

Which of the following quantity is analogus to temperature in electricity

a = Charge

b = Resistance

c = Inductance

d = Potential

a = 4 actin filaments

b= 6 actin filaments

c= 8 actin filaments

d= 12 actin filaments

Parthenogenesis is a type of reproduction which requires

a= one gamete

b= two gamete

c=two parent

d= no parent

a= friction

b= third law of motion

c= motion

d= torque

i think option a and b both are correct so can you tell which one is the best

COOH found in which of the following?

a= lipid b= lipid and protiens c= lipid and carbohydrates d= protiens

i think the answer is only lipid because amino acid contain COOH but when protien is form the condensation polymirization occurs so it looses COOH group and carbohydrates contain the ketone and aldehyde group. so please tell me that is the answer is lipid

Which of the following posses polar and non polar bond?

a= NH3

b= CO2

c= CH4

d= H2O2

The pressure exerted by an ideal gas molecules is

a=directly proportional to the average translational K.E of the gas molecules

b=directly proportional to the total number of gas molecules in volume

suppose a drop has a charge q and radius r.100 such drops are combined together to form a big drop. The potential of big drop formed will be how many times the potential of the small drop?

a= 10 b= 100 c= 1000 d= 10000

a= lipid b= lipid and protiens c= lipid and carbohydrates d= protiens

when a waves moves through 10m, a point changes from crest to trough and time taken is 1 sec . then the wave length of the wave and its frequency are

a= 20m, 0.5hz

b= 0.5m, 20 hz

c= 10m , 1 hz

d= 1m, 10 hz

The frequency of sound waves is "f" and velocity is "v" , if frequency increases to "4f" , velocity will be

a= v

b= 4v

c= v by 4

d= 2v

two tuning forks of frequencies 710 cps are sounded together , the no. of beats produce in 5 sec is

a=6 b= 10 c= 15 d= 18

A particle executes a simple harmonic motion of time period T . find the time taken by the particle to go directly from its mean position to half the amplitude

a= T by 2

b= T by 4

c= T by 8

d= T by 12

A catalyst is used in a system to

a=change the reaction products

b=increase the reaction yield

c=decrease the reaction yield

d=decrease the time of reaction

In young double slit experiment on interference , the ratio of the intensities of a bright band and a dark band is 6:1 . The ratio of the amplitudes of the interfering waves is

a=16 b= 5 by 3 c= 4 d= 1 by 4

A lens of focal length "f " is cut into two halves by a vertical plane , the focal length of each half is:

a= f b= 2f c= 4f d= none