General Science - Online Test
Q1.
he commonly occurring isotopes of carbon atoms are: 612C, 613C, 614C . They contain:
Answer : Option C
Explaination / Solution:
Isotopes are atoms with the same number of protons but that have a different number of neutrons.
Atomic number of carbon = 6
So number of protons in each isotope = 6
Number of neutrons in = 12-6= 6
Number of neutrons in = 13-6= 7
Number of neutrons in = 14-6= 8
Q2. Calculate Pearson's correlation coefficient from the following data :
Answer : Option C
Explaination / Solution:
Q3. PDS stands for
Answer : Option A
Explaination / Solution:
Public distribution system (PDS) is an Indian food security system. Established by the Government of India under Ministry of Consumer affairs. Food and and are managed jointly by state government of India. it distributes subsidized food and non-food items to India's poor. This scheme was launched in India on June 1947. Major commodities distributed include staple food grains, such as wheat rise and kerosene through a network of fair price shops (also known as ration shops) established in several states across the country.
Q4. In mosses, the sex organs are arise from
Answer : Option B
Explaination / Solution:
In sexual reproduction, the sex organs antheridia and archegonia are produced at the apex of the leafy shoots.
Q5. Who was the first to explain that cells divide?
Answer : Option C
Explaination / Solution:
The German doctor Rudolf Virchow proposed in 1855 that all cells result from the division of previously existing cells, and this idea became a key piece of modern cell theory.
Q6. Sugar Mills association publishes information regarding sugar mills in India. It is a source of data from _______.
Answer : Option B
Explaination / Solution:
Sugar mill assosiation's publications are part of various industrial and trade associations and are Non Government Publications
Q7.
Match the following. Options are
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. RNA molecules that act as enzymes are called
Answer : Option C
Explaination / Solution:
Until about 20 years ago, all known enzymes were proteins. But then it was discovered that some RNA molecules can act as enzymes; that is, catalyze covalent changes in the structure of substrates (most of which are also RNA molecules). Catalytic RNA molecules are called ribozymes.
Only a few RNA molecules act as enzymes.
Q9. An L-R-C series circuit has phase angle .The voltage amplitude of the source is 90.0 V. Voltage amplitude across the resistor is
Answer : Option A
Explaination / Solution:
in L-R-C circuit phaser diagram
hence,
Q10. Ferrous sulphate on heating gives
Answer : Option B
Explaination / Solution:
FeSO4 on heating gives SO2 and SO3
