General Science - Online Test
Q1. For the first order reaction, half life is equal to
Answer : Option C
Explaination / Solution:
For 1st order reaction half life is independent of initial concentration of reactant.
Q2. Caption stands for
Answer : Option D
Explaination / Solution:
At the top of each column in a table a column designation is given to explain figures of the column. This is
called caption
Q3. During operation flood production of milk increase
Answer : Option A
Explaination / Solution:
Operation Flood is the program behind "the white revolution." It created a national milk grid linking producers throughout India with consumers in over 700 towns and cities, it transformed India from a milk-deficient nation into the world's largest milk producer.
Q4. In which stage, the cells remain metabolically active but do not proliferate?
Answer : Option C
Explaination / Solution:
In Go stage the cells are in a metabolically active state but do not divide unless there are some abnormal genes which reverses the same. This stage is also called quiscent stage. Examples human nerve cells.
Q5. Null vector or a zero vector has a magnitude
Answer : Option B
Explaination / Solution:
A null vector is a vector having magnitude equal to zero.It is represented by .
A null vector has no direction or it may have any direction.
Generally a null vector is either equal to resultant of two equal vectors acting in opposite directions or multiple vectors in different directions.
Q6. Hardening of leather in tanning industry is based on
Answer : Option A
Explaination / Solution:
Fact
Q7. The population of which of the country is small
Answer : Option A
Explaination / Solution:
Compared to China and India, Pakistan is having least population. China is having largest population in the world and India occupies the second place.
Q8. Conductors are materials
Answer : Option A
Explaination / Solution:
Conductors are materials that permit electrons to flow freely from particle to particle. An object made of a conducting material will permit charge to be transferred across the entire surface of the object.
In conductors some electrons are unpaired so these electrons can move freely.
Q9. According to Hooke’s law
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. Lysozyme kills bacteria by destroying
Answer : Option D
Explaination / Solution:
Lysozyme is capable of breaking the chemical bonds in the outer cell wall of the bacteria. Bacterial cell walls contain a layer of peptidoglycan, which is the specific site that lysozyme targets.
The peptidoglycan layer contains alternating molecules called N-acetylglucosamine and N-acetylmuramic acid. These molecules form a strong glycan chain that act as the backbone for the cell wall.
The link between the N-acetylglucosamine and N-acetylmuramic acid is cleaved by lysozyme. Once this chain is broken by lysozyme, it results in bacterial death.
