Which of the following is a ring-chain hydrocarbon?
a.
Benzene
Correct Answer
b.
Propane
c.
Heptyne
d.
Ethene
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Q2mcq
What is the formula of washing soda?
a.
Na ₂ CO ₃ ·10H ₂ O
Correct Answer
b.
NaHCO ₃
c.
NaOH
d.
Na ₂ CO ₃
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Q3mcq
The principle of conservation of energy is applicable to ___________.
a.
every mechanical system only
b.
every chemical system only
c.
every physical process in general
Correct Answer
d.
every electrical system exclusively
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Q4mcq
The magnification (m) produced by a lens is defined as the ratio of _____________.
a.
the image height to the object height
Correct Answer
b.
the focal length to the object distance
c.
the object distance to the image distance
d.
the object height to the image height
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Q5mcq
Which meristem is located near the nodes in some plants?
a.
Apical meristem
b.
Root meristem
c.
Lateral meristem
d.
Intercalary meristem Test Date 05/02/2026 Test Time 12:45 PM - 2:15 PM Subject RRB Level 01 Stage I * Note Correct Answer will carry 1 mark per Question. Incorrect Answer will carry 1/3 Negative mark per Question. 1. Options shown in green color with a tick icon are correct. 2. Chosen option on the right of the question indicates the option selected by the candidate.
Correct Answer
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Q6mcq
Which of the following are the most reactive and the least reactive metals, respectively, in a reactivity series?
a.
Potassium, Gold
Correct Answer
b.
Sodium, Gold
c.
Magnesium, Silver
d.
Magnesium, Gold
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Q7mcq
When an object is placed between the pole (P) and the focus (F) of a concave mirror, what kind of image is formed?
a.
Real, inverted, and enlarged
b.
Virtual, inverted, and diminished
c.
Virtual, erect, and enlarged
Correct Answer
d.
Real, inverted, and diminished
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Q8mcq
Which of the following steps can increase the expected yield of a crop?
a.
Irrigation at early stages of crop.
b.
Irrigation at terminal stage of crop.
c.
Irrigation at right stage of crop.
Correct Answer
d.
Irrigation at every stage of crop.
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Q9mcq
A block of mass M is subjected to two opposing forces F 1 and F 2 ( F 1 > F 2 ). If the frictional force ( F f ) acting opposite to F 1 is such that the net acceleration of the block is half the acceleration it would have experienced if friction were zero, what is the relation for F f ?
a.
Ff =( F1 + F2)/2
b.
Ff =( F1 - F2)/2
Correct Answer
c.
Ff =( F1 - F2)
d.
Ff = 2( F1 - F2)
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Q10mcq
What is the colour of the precipitate formed when silver nitrate reacts with sodium chloride?
a.
Green
b.
Blue
c.
Yellow
d.
White
Correct Answer
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Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R). Assertion (A): Soap solution appears cloudy. Reason (R): The soap micelles are large enough to scatter light.
a.
A is false, but R is true.
b.
A is true, but R is false.
c.
Both A and R are true, and R is not the correct explanation of A.
d.
Both A and R are true, and R is the correct explanation of A.
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A straight conductor is carrying current in the +x-direction, this conductor is placed in a magnetic field pointing in the +y-direction. What will be the direction of motion of the conductor?
a.
positive z direction
b.
positive x direction
c.
negative y direction
d.
negative x direction
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Which of the following is true for the plants raised by vegetative propagation? Statement A: Vegetatively propagated plant can bear flowers and fruits earlier than those produced from seeds. Statement B: Vegetatively propagated plants are genetically dissimilar to the parent plant.
a.
Statement A is incorrect but statement B is correct
b.
Both Statement A and statement B is incorrect
c.
Both Statement A and statement B is correct
d.
Statement A is correct but statement B is incorrect
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