General Science - Online Test
Q1. What would happen to the variance of a data set if we multiplied every observation by 5?
Answer : Option B
Explaination / Solution:
Change in variance is the square of change in scale.
Q2. f-block of the Periodic Table consists of
Answer : Option C
Explaination / Solution:
The two rows of elements at the bottom of the Periodic Table, called the Lanthanoids, Ce(Z = 58) – Lu(Z = 71) and Actinoids, Th(Z = 90) – Lr (Z = 103) are characterised by the outer electronic configuration (n-2)f1-14 (n-1)d0-1 ns2. The last electron added to each element is filled in f- orbital. These two series of elements are hence called the Inner- Transition Elements (f-Block Elements).
Q3. Conventional source of energy are
Answer : Option D
Explaination / Solution:
Conventional source of energy are commercial and non-commercial sources of energy. Commercial sources are coal, petroleum and electricity as they are bought and sold. Non-commercial sources of energy are firewood, agricultural waste and dried dung. These are non- commercial as they are found in nature/forests.
Q4.
Molar volume is the volume occupied by 1 mol of any (ideal) gas at standard temperature and pressure (STP : 1 atmospheric pressure, 0 C). The value of Molar volume is
Answer : Option A
Explaination / Solution:
PV=nRT
V=nRTP=1×8.31×2731.01×105=0.02224m3=22.4lit
Q5. Which kind of embryo is shown in figure below
Answer : Option D
Explaination / Solution:
The zygote divides mitotically many times to form large number of cells. These cells arrange into different shape. The most common embryo is Globular embryo.
Q6. Age groups among human population includes all except
Answer : Option C
Explaination / Solution:
Age groups among human population includes reproductive, pre-reprouctive and post reproductive growth. It do not includes embryonic phase growth.
Q7. An economy always produces on, but not inside a PPC.
Answer : Option B
Explaination / Solution:
When an economy produces on PPC it mean there is no unemployment and all the resources are fully and being used efficiently but practically . If there is unemployment or inefficient use of resources an economy will operate inside the PPC.
Q8. Amino acid derivatives in which –OH component of carboxylic group is replaced by another amino group are called
Answer : Option C
Explaination / Solution:
Amides are obtained from the replacement of –OH component of carboxylic group of amino acid by another amino group.
Q9. The secretions released into small intestine are
Answer : Option D
Explaination / Solution:
The bile, pancreatic juice and the intestinal juice are the secretions released into the small intestine.
Q10. Accommodation of the human eye is
Answer : Option C
Explaination / Solution:
No Explaination.
