General Science - Online Test
Q1. The process of separation of colloids by passing through semi permeable membrane is called
Answer : Option C
Explaination / Solution:
Dialysis we use, salt solution of approximately same concentration outside the artificial blood capillary, so that urea comes out of the blood, but other useful substances like NaCl , blood cell etc does not. Blood is a colloid.
Q2. A solid metallic sphere has a charge + 3Q. Concentric with this sphere is a conducting spherical shell having charge –Q. The radius of the sphere is ‘a’ and that of spherical shell is ‘b’ (b>a). The electric field at a distance R (a
Answer : Option A
Explaination / Solution:
since we want to find electric field at point P at distance R from centre since at this point only the effect of that charge is taken which is at the surface of solid sphere so the electric field at point P at a distance R from centre is
since we want to find electric field at point P at distance R from centre since at this point only the effect of that charge is taken which is at the surface of solid sphere so the electric field at point P at a distance R from centre is
Q3. In pBr322, B and R stands for
Answer : Option C
Explaination / Solution:
Plasmid vector Pbr322 is a multipurpose cloning vector. In pBr322, B and R stand for Boliver and Rodriguez who discovered this cloning vector.
Q4.
A 14.5 kg mass, fastened to the end of a steel wire of unstretched length 1.0 m, is whirled in a vertical circle with an angular velocity of 2 rev/s at the bottom of the circle. The cross-sectional area of the wire is 0.065 . Calculate the elongation of the wire when the mass is at the lowest point of its path.
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. A thermodynamic system undergoes a process in which its internal energy decreases by 500 J. If, at the same time, 220 J of work is done on the system, what is the energy transferred to or from it by heat?
Answer : Option B
Explaination / Solution:
ΔQ=ΔU+W=(−500)+(−220)=−720J
Q6. Which one of the followings is also called Sewall Wright Effect?
Answer : Option D
Explaination / Solution:
Sewall Wright was the chief developer of the mathematical theory of genetic drift, which is sometimes known as the Sewall Wright effect, cumulative stochastic changes in gene frequencies that arise from random births, deaths, and Mendelian segregations in reproduction.
Q7. A plot of volume (V ) versus temperature (T ) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in Figure. Which of the following order of pressure is correct for this gas?
Answer : Option B
Explaination / Solution:
keep Temperature constant we know Pα1/V So as V increases P decreases.
Q8. Simple protein is.
Answer : Option B
Explaination / Solution:
Simple protein is Albumin.
Q9. categories of water use which Provinvial and Federal governments use to regulate water quality?
Answer : Option E
Explaination / Solution:
No Explaination.
Q10. Identify from the following, category which has real existence
Answer : Option C
Explaination / Solution:
Kingdom is a category which has real existence. All the living organisms are divided into 5 kingdoms that exist naturally. Phylum, genus, species etc. is thename given to a group of organisms having some common traits.
