General Science - Online Test
Q1.
The rate of chemical reaction becomes double for every 10o rise in temperature because of
Answer : Option A
Explaination / Solution:
With increase in temperature molecular collisions increases therefore rate of reaction doubles.
Q2. The most commonly used device of presenting business and economic data is:
Answer : Option B
Explaination / Solution:
Bar diagrams are very simple to understand and most suitable for presenting year wise data of sales, profits, etc of the business.
Q3. Following are the institutional sources of agricultural credit except
Answer : Option B
Explaination / Solution:
Money lenders is the non institutional source.
Q4. Each chromosome consists of ---- chromatid.
Answer : Option A
Explaination / Solution:
The resulting two identical copies of DNA are connected to each other at the centromere. Each copy is called a chromatid. A chromosome, before cell division is formed of one chromatid while it is formed of two chromatids after cell division.
Q5.
If are components of vectors A and B along the x and y axis then the sum of the vectors A and B has a component in the x direction equal to
Answer : Option B
Explaination / Solution:
The component method of addition can be summarized this way:
- Using trigonometry, find the x-component and the y-component for each vector.
- Add up both x-components, (one from each vector), to get the x-component of the total.
- Add up both y-components, (one from each vector), to get the y-component of the total.
- Add the x-component of the total to the y-component of the total, and then use the Pythagorean theorem and trigonometry to get the size and direction of the total.
Using these points in mind, the sum of the vectors A and B has a component in the x direction
Q6. Enzymes are
Answer : Option A
Explaination / Solution:
Enzymes are biological catalyst, they catalize different chemical reactions in body.
Q7. Occupation wise an economy is classified as
Answer : Option C
Explaination / Solution:
The three sector theory is an economic theory which divides economies into three sectors of activity: extraction of raw materials, manufacturing and services.
Q8. According to superposition of electric fields
Answer : Option B
Explaination / Solution:
When several electric fields are working on single charge then the total electric field intensity on that charge is given by the vector sum of all electric field intensities
Q9. With reference to figure the tensile stress corresponds to stress at point
Answer : Option B
Explaination / Solution:
The point D on the graph is the ultimate tensile strength of the material. Beyond this point , additional strain is produced even by a reduced applied force and fracture occurs at point E.
After point D thinning of wire started and finally the wire breaks.
So D shows tensile strength.
Q10. The extraction of DNA from the agrose gel is called as
Answer : Option C
Explaination / Solution:
The extraction of specific bands of DNA from agarose gels in which they are separated through electrophoresis is known as elution. There are many methods for eluting DNA from a piece of agrose.
