General Science - Online Test
Q1. For meaningful comparison common price level base is used because
Answer : Option D
Explaination / Solution:
A price level is the average of current prices across the entire spectrum of goods and services produced in the economy. In a more general sense, price level refers to any static picture of the price of a given good, service or tradable security. Price levels may be expressed in small ranges, such as ticks with securities prices, or presented as a discrete value.
Q2. In which stage of mitosis, the number and shape of chromosome can be observed?
Answer : Option C
Explaination / Solution:
The metaphase is characterised by all the chromosomes coming to lie at the equator with one chromatid of each chromosome connected by its kinetochore to spindle fibres from one pole and its sister chromatid connected by its kinetochore to spindle fibres from the opposite pole.
Q3. Adsorption is a
Answer : Option A
Explaination / Solution:
Adsorption is entirely a bulk phenomenon while absorption is bulk phenomenon.
Q4. A hollow spherical conductor of radius 2m carries a charge of 500 μ C. Then electric field strength at its surface is
Answer : Option D
Explaination / Solution:
Q5.
A steel rod 2.0 m long has a cross-sectional area of 0.30 . It is hung by one end from a support, and a 550-kg milling machine is hung from its other end. Determine the resulting strain
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. Thermostable DNA polymerase is isolated from bacterium
Answer : Option D
Explaination / Solution:
Taq polymerase is a thermostable DNA polymerase named after the thermophilic bacterium Thermus aquaticus from which it was originally isolated by Chien et al. in 1976.Its name is often abbreviated to Taq Pol or simply Taq. It is frequently used in the polymerase chain reaction (PCR), a method for greatly amplifying the quantity of short segments of DNA. It remain active during high temperature induced denaturation of double stranded DNA.
Q7. During micturition, the muscles of urinary bladder and urethral sphincters will
Answer : Option A
Explaination / Solution:
The CNS passes on motor messages to initiate the contraction of smooth muscles of the bladder and simultaneous relaxation of the urethral sphincter causing the release of urine.
Q8. Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. What is the final pressure of the gas in A and B?
Answer : Option A
Explaination / Solution:
PV = Pf.2V
Pf = V / 2V
Pf = 0.5P
Q9. According to Darwin, evolution is
Answer : Option B
Explaination / Solution:
According to Charles Darwin, evolution is a very slow and gradual process. He believed that evolution took place over a very long period of time. When we talk about time period in evolution we usually refer to billions of years. The generation of a species from another takes a long period of time. It is a very steady process as the changes and adaptation take long time to stabilise and give rise to a new species.
Q10.
The drain cleaner, Drainex contains small bits of aluminum which react with caustic soda to produce dihydrogen. What volume of dihydrogen at and one bar will be released when 0.15g of aluminum reacts?
Answer : Option B
Explaination / Solution:
Moles of Al= 0.15/27 =0.0055 moles And 2 mole of Al produces 3 moles of so 0.0055 moles will produce 3/2x0.0055 moles of =0.00825 moles. Now PV=nRT where n=0.00825 , P=1 bar and T=293K.
Moles of Al= 0.15/27 =0.0055 moles And 2 mole of Al produces 3 moles of so 0.0055 moles will produce 3/2x0.0055 moles of =0.00825 moles. Now PV=nRT where n=0.00825 , P=1 bar and T=293K.
