General Science - Online Test
Q1. During zygotene stage chromosomes start pairing together and the process is called as
Answer : Option B
Explaination / Solution:
During zygotene stage, the homologous chromosomes start pairing together and this process of association is called synapsis. The paired homologous chromosomes are called bivalents.
Q2. A Gaussian sphere encloses an electric dipole within it. Total flux across the sphere is
Answer : Option D
Explaination / Solution:
Q3.
A steel wire of length 4.7 m and cross-sectional area 3.0 stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 4.0 under a given load. What is the ratio of the Young’s modulus of steel to that of copper?
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. The smallest bands in the agarose gel will be towards
Answer : Option D
Explaination / Solution:
Gel electrophoresis technique involves separation of different segments of DNA according to their size. The smallest bands in the agarose gel will be towards positively charged anode.
Q5. Vasopressin is a hormone involved in regulation of urine formation. It is secreted from :
Answer : Option B
Explaination / Solution:
An excessive loss of fluid from the body can activate receptors which stimulate the hypothalamus to release antidiuretic hormone (ADH) or vasopressin from the neurohypophysis.
Q6.
A geyser heats water flowing at the rate of 3.0 liters per minute from 27 C to 77 C. If the geyser operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is 4.0 J/g?
Answer : Option B
Explaination / Solution:
m = mass of water
s = specific heat of water
heat of combustion is 4.0 J/g
rate of consumption of the fuel = Q / Heat of combustion
Q7. Evolution and natural selection is demonstrated by
Answer : Option C
Explaination / Solution:
Evolution and natural selection can be demonstrated by DDT resistance in Mosquito. Earlier, mosquitoes are not resistance to DDT. They get killed due to presence of DDT but later on more DDT is used and due to natural selection mosquito become resistant to DDT.
Q8. Water has high surface tension and high capillarity because of
Answer : Option D
Explaination / Solution:
Water molecules form extensive Hydrogen Bonds.
Q9.
For the reaction 2HI (g), the standard free energy is The equilibrium constant (K ) would be __________.
Answer : Option B
Explaination / Solution:
ΔG=-RTlnK
Q10. zwitter ionic form of amino acids behave like
Answer : Option A
Explaination / Solution:
Zwitter ion contain two polar group, amino and carboxalic acid group.
