Match the following and select the correct option from the codes given below.
|Column I||Column II|
|(A) Railway engine||(i) Quintal|
|(B) Packet of chilli||(ii) kg powder|
|(C) Sack of wheat||(iii) mg|
|(D) Huge bag of sand||(iv) g|
|(E) Aspirin tablet||(v) Metric ton|
A (A) - (v), (B) - (iv), (C) - (i), (D) - (ii), (E) - (iii)
B (A) - (i), (B) - (ii), (C) - (iii), (D) - (iv), (E) - (v)
C (A) - (ii), (B) - (iv), (C) - (v), (D) - (iii), (E) - (i)
D (A) - (iii), (B) - (ii), (C) - (iv), (D) - (v), (E) - (i)
There are three long planks, each of length 5 meters.
Three identical balls are placed on the planks as shown in the figure.
Frictional force offered by planks I, II and III on the ball are f1, f2 and f3 respectively.
If same force (push) is given to each ball then time taken to leave the planks I, II and III are 2 minutes, 1 minute and 4 minutes respectively.
Which of the following options is correct regarding the friction force offered by the planks on the ball?
Af1 = f2 = f3
Bf1 > f2 = f3
Cf3 > f1 > f2
Df3 < f1 < f2
Following statements are given by four
Rashmi : Sodium chloride is an acidic salt whereas washing soda is a basic salt.
Akshi : The aqueous solution of sugar does not change the colour of either red litmus solution or blue litmus solution.
Reema : Tamarind tastes sour whereas baking soda is bitter in taste.
Shristi : Apple juice does not change the colour of red litmus solution.
The incorrect statement(s) is/are given by
AReema and Shristi only
CAkshi and Reema only
DAkshi and Shristi only.
Read the given statements and select the correct option.
Statement 1 : Circular motion is the motion along a curve traced out by a moving object such that its distance from a fixed point is constant.
Statement 2 : The motion of a wheel of a moving bicycle is same as the motion of a mark on the blades of a moving electric fan.
ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DStatement 1 is false but statement 2 is true.