Forwarded from BEST STUDY
The cpd carbon tetrachloride &tetra chloro ethylene are
Anonymous Quiz
27%
Food preserving
18%
Tanning
49%
Dry cleaning
6%
Sugar production
Forwarded from BEST STUDY
The first atomic theory was proposed by
Anonymous Quiz
4%
Thomson
15%
Aristotle
31%
Dalton
49%
Democritus
Forwarded from BEST STUDY
Ionic cpds are generally
Anonymous Quiz
43%
Volatile molecular
31%
Clasery packed dense solids
9%
Soft molecular solids
17%
Rigid molecular soli
Forwarded from BEST STUDY
Which one of the following changes is an example of a chemical change?
Anonymous Quiz
18%
Melting of fat
63%
Decomposing of copper carbonate
11%
Evaporation of water
9%
Dissolving of salt in water
Forwarded from BEST STUDY
The acid that is responsible for the painful feeling from the "sting of ants 🐜 "is
Anonymous Quiz
9%
Propanoic acid
11%
Butanoic acid
66%
Formic acid
13%
Acetic acid
Forwarded from BEST STUDY
Aromatic hydrocarbons mainly react by
Anonymous Quiz
8%
Elimination
39%
Hydrogenation
18%
Addition
34%
Substitution
Forwarded from BEST STUDY
The most important industrial application of alkanes is
Anonymous Quiz
22%
I polymers production
60%
As fuel
7%
In insecticide
10%
As a solvent
Forwarded from Quiz channel
WC-Commonly-Confused-Words.pdf
140.9 KB
Grade 11 - Vectors and Types of Vectors 🧭➕➖
📚 Topic: Vectors and Types of Vectors
Vectors are quantities that have both magnitude and direction, unlike scalars, which have only magnitude. Understanding vectors is essential in physics as they are used to describe phenomena like velocity, force, and displacement. 🏹⚙️
Types of Vectors:
Null Vector: A vector with zero magnitude and no direction.
Unit Vector: A vector with a magnitude of one, used to indicate direction.
Equal Vectors: Vectors that have the same magnitude and direction.
Opposite Vectors: Vectors with the same magnitude but opposite directions.
🖼️ Vectors are represented graphically by arrows, where the length represents magnitude and the arrowhead indicates direction. 🎯
Challenging Questions:
1. Which of the following is NOT a vector quantity?
a) Displacement
b) Velocity
c) Time
d) Force
2. What is the condition for two vectors to be considered equal?
a) Same magnitude but different directions
b) Same magnitude and same direction
c) Different magnitudes and different directions
d) Any two vectors with opposite directions
3. If a vector A has components 3 and 4 (written as A = (3, 4)), what is its magnitude?
a) 5
b) 7
c) 1
d) 3
4. What happens to a vector if it is multiplied by a negative scalar?
a) It changes direction
b) It doubles in magnitude
c) It halves in magnitude
d) It remains unchanged
5. If a vector B is given by B = (5, 12), what is the direction of the vector (usually expressed in degrees)?
For more join @bestchannelstudy
📚 Topic: Vectors and Types of Vectors
Vectors are quantities that have both magnitude and direction, unlike scalars, which have only magnitude. Understanding vectors is essential in physics as they are used to describe phenomena like velocity, force, and displacement. 🏹⚙️
Types of Vectors:
Null Vector: A vector with zero magnitude and no direction.
Unit Vector: A vector with a magnitude of one, used to indicate direction.
Equal Vectors: Vectors that have the same magnitude and direction.
Opposite Vectors: Vectors with the same magnitude but opposite directions.
🖼️ Vectors are represented graphically by arrows, where the length represents magnitude and the arrowhead indicates direction. 🎯
Challenging Questions:
1. Which of the following is NOT a vector quantity?
a) Displacement
b) Velocity
c) Time
d) Force
2. What is the condition for two vectors to be considered equal?
a) Same magnitude but different directions
b) Same magnitude and same direction
c) Different magnitudes and different directions
d) Any two vectors with opposite directions
3. If a vector A has components 3 and 4 (written as A = (3, 4)), what is its magnitude?
a) 5
b) 7
c) 1
d) 3
4. What happens to a vector if it is multiplied by a negative scalar?
a) It changes direction
b) It doubles in magnitude
c) It halves in magnitude
d) It remains unchanged
5. If a vector B is given by B = (5, 12), what is the direction of the vector (usually expressed in degrees)?
For more join @bestchannelstudy
Forwarded from Quiz channel
Try these questions
Q1.Today is Monday. After 61 days, it will be:
A.Wednesday
B.Saturday
C.Tuesday
D.Thursday
Q2.The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
A.4 years
B.8 years
C.10 years
D.None of these
Try this question for aptitude .
For more join this channel now OK.
@bestchannelstudy
Q1.Today is Monday. After 61 days, it will be:
A.Wednesday
B.Saturday
C.Tuesday
D.Thursday
Q2.The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
A.4 years
B.8 years
C.10 years
D.None of these
Try this question for aptitude .
For more join this channel now OK.
@bestchannelstudy