General Science - Online Test
Q1. Which of the following bacterium produces butyric acid?
Answer : Option A
Explaination / Solution:
Clostridium butylicum is used to produce butyric acid. Butyric acid is important industrial chemicals used to process food items.
Q2. Coils and are stationary. connected in series with a galvanometer while is connected to a battery through a tapping key. If the tapping key is pressed and released the galvaometer
Answer : Option C
Explaination / Solution:
flux will be changed when current in C2 is changing. Hence current will be induced in coil C1.
Q3. In precession such as that of a top
Answer : Option B
Explaination / Solution:
As precession is a change in the orientation of the rotational axis of a rotating body, so the orientation of axis of rotation of Top change
Q4. Photoelectric effect is possible
Answer : Option D
Explaination / Solution:
Emission of photoelectron takes place when energy of incident photon is greater than that of work function of material. Work function is different for different material. Photoelectric effect takes place for both UV and visible light depending on work function.
Q5. Which of the following is a possible first step in applying the scientific method
Answer : Option A
Explaination / Solution:
The scientific method starts when you ask a question about something that you observe: How, What, When, Who, Which, Why, or Where? For a science fair project some teachers require that the question be something you can measure, preferably with a number. Add image of question 16686
Q6. In normal adults, the enzyme which catalyses conversion of MHb into Hb is :
Answer : Option C
Explaination / Solution:
Methemoglobin cannot bind oxygen, unlike oxyhemoglobin. It is bluish chocolate-brown in color.
In human blood a trace amount of methemoglobin is normally produced spontaneously, but when present in excess the blood becomes abnormally dark bluish brown.
The NADH-dependent enzyme methemoglobin reductase (MHbreductase enzyme) is responsible for converting methemoglobin back to hemoglobin. . MHb is inactive forms that is converted into Hb that carries oxygen in blood.
Q7. Which of the following statements about pure substances is correct ?
Answer : Option B
Explaination / Solution:
Pure substances have fixed composition..These may be both (ie. either elements or compounds ) . The law of constant composition holds good for such substances .
Q8. The following (CH3)2CHCH2CH2Cl
(CH3)2CHCH(Cl)CH3
(CH3)2C(Cl)CH2CH3
CH3CHCH2(Cl)CH2CH3
are the possible structural isomers expected to be formed if one of the hydrogen atoms is replaced by chlorination. The original compound is
(CH3)2CHCH(Cl)CH3
(CH3)2C(Cl)CH2CH3
CH3CHCH2(Cl)CH2CH3
are the possible structural isomers expected to be formed if one of the hydrogen atoms is replaced by chlorination. The original compound is
Answer : Option B
Explaination / Solution:
this is the original compound.
this is the original compound.
Q9. Which of the following are the two main components of the CPU?
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. The spatial arrangement of the molecule is denoted by
Answer : Option A
Explaination / Solution:
D is dextrotatry , L is leavorotatry.
