General Science - Online Test
Q1. What must be added to domestic factor income to obtain national income?
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. The dielectric constant K of an insulator cannot be
Answer : Option A
Explaination / Solution:
Dielectric constant of a metal is infinity, and this is why the electric field inside a metal is zero. All other substances have a dielectric constant with values less than infinity but greater than 1.
Q3.
Consider the chemical equation ,
----- KOH + ----- H3PO4 → ----- K3PO4 + ----- H2O.
The equation can be balanced by inserting the following in blank spaces
Answer : Option C
Explaination / Solution:
The given equation gets balanced by inserting the coefficients (3 , 1 ,1 ,3 ) in blank spaces from LHS to RHS . Thus, the balanced equation for the given reacion is ,
3KOH + H3PO4 → K3PO4 + 3H2O.
Q4.
The below molecule is called
Answer : Option A
Explaination / Solution:
This polymer is polyvinylchloride.
Q5. Which gas has a smell of rotten fish?
Answer : Option C
Explaination / Solution:
Phosphine has smell like rotten fish.
Q6. Which of the following curve has a negative slope and cannot interest each other?
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. The radius of gyration of a circular loop of radius r and mass m rotating about its diameter as axis is
Answer : Option C
Explaination / Solution:
Moment of inertia of ring or circular loop about axis passing through centre of mass and perpendicular to plane is MR2 ,
Applying perpendicular axis theorm
Here I = Moment of inertia about axis passing through diameter
As moment of inertia in terms of radius of gyration (k) is Mk2
I = Mk2
Q8. Capillary Rise of water is explained by
Answer : Option C
Explaination / Solution:
Capillary action(sometimes capillarity or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of,or even in opposition to, external forces like gravity. The effect can be seen in the drawing up of liquids between the hairs of a paint-brush, in porous materials such as paper and plaster, in some non-porous materials such as sand and liquefied carbon fiber, or in a cell. It occurs because of intermolecular forces between the liquid and surrounding solid surfaces. If the diameter of the tube is sufficiently small, then the combination of surface tension (which is caused by cohesion within the liquid) and adhesive forces between the liquid and container wall act to propel the liquid.
Q9. Solid X is a very hard electrical insulator in solid as well as in molten state. It melts at extremely high temperature. Solid X is a
Answer : Option B
Explaination / Solution:
Covalent solid doesnot conduct electricity in molten and solid state.
Q10. otal water content presenTt in the soil is called
Answer : Option B
Explaination / Solution:
Total water content present in the soil is called holard. Out of this, the water which can be absorbed by the plant is called chresard and remaining is called echard.
