General Science - Online Test
Q1. A rise in the income of the consumer leads to a fall in the demand for commodity ‘x’. What type of good is commodity ‘x’?
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. The radius of gyration of a solid disc about one of its diameter is given by
Answer : Option D
Explaination / Solution:
Moment of inetia of axis passing through its center and perpendicular to its plane:
I = ½ MR2
Using perpendicular axis theorem Ix +Iy = Iz ,so 2Id = ½ MR2
Moment of inetia of along its diameter Id = ¼MR2
And the radius of gyration MK2 = ¼MR2
Q3. One thousand small water droplets of equal size combine to form a big drop. The ratio of the final surface energy to the total initial surface energy is
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. In β-decay, the nucleus emits.
Answer : Option A
Explaination / Solution:
In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which a beta ray (fast energetic electron or positron), and a neutrino are emitted from an atomic nucleus. For example, beta decay of a neutron transforms it into a proton by the emission of an electron, or conversely a proton is converted into a neutron by the emission of a positron (positron emission), thus changing the nuclide type.
Q5.
The ionization constant of acetic acid is . Calculate the degree of dissociation of acetic acid in its 0.05 M solution. Calculate the concentration of acetate ion in the solution and its pH.
Answer : Option B
Explaination / Solution:
Ka = and pH=-log(Cα).
Q6. The mouth part of cockroach which is compared to tongue is
Answer : Option A
Explaination / Solution:
A median flexible lobe called as hypopharynx act as tongue. It lies within the cavity enclosed by the mouth parts.
Q7. A peculiar group of dual organism which are formed by an association between an algae and a fungus.
Answer : Option C
Explaination / Solution:
A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi in a symbiotic relationship. The combined lichen has properties different from those of its component organisms.
Q8.
In the following sequence of reactions, the alkene is converted to compound
The compound is --------- ?
Answer : Option A
Explaination / Solution:
The given sequence of conversion steps represent Ozonolysis of 2-Butene , which follows the following path ,
1 . Formation of an unstable intermediate / ozonide
2 . Cleavage of the intermediate / ozonide by to smaller molecules , giving out the compound , which is CH3 CHO ( Ethanal )
The reaction is well depicted as below ,
,
Q9. Fiscal deficit is that part of total government expenditure which is met by
Answer : Option B
Explaination / Solution:
Fiscal deficit arises when government expenditure is more than government revenue and therefore the balance is met through borrowings.
Q10. Balance of current account includes
Answer : Option D
Explaination / Solution:
No Explaination.
