CBSE Class 10 - CH 8: Introduction to Trigonometry - NCERT Ex 8.1

Introduction to Trigonometry 

NCERT Exercise 8.1 Chapter Answers 

NCERT Chapter 8.1 solutions are available at www.eduvictors.com site.
Please share your feedback and suggestions here.

CBSE Class 12: Business Studies - CH10 - Financial Markets (Very Short Q and Answers)

Financial Markets

Very Short Q & A based on NCERT Chapter.

Q1: What is a financial market?

Answer: A financial market is a market for the creation and exchange of financial assets.


Q2: Does Financial contribute in any development?

Answer: Financial markets contribute to economic development.


Q3: Name the two major components of a financial market.

Answer: Money Market and Capital Market


Q4: What are financial assets?

Answer: Financial instruments or securities like shares, debentures, treasury bills etc. are considered to be financial assets.


Q5: What is a money market?

Answer: A money market refers to the market where borrowers and lenders exchange short-term funds to solve their liquidity needs.

CBSE Class 6 Science Ch 12 Electricity and Circuits (MCQs)

CBSE Class 6 Science Chapter 12 

Electricity and Circuits

NCERT Chapter MCQs

Q1: What is pointer 'A', as shown in figure of an electric bulb?

(a) Element
(b) Filament
(c) Holder
(d) Terminal



Q2: What is pointer 'B', as shown in figure of an electric bulb?

(a) Element
(b) Filament
(c) Holder
(d) Terminal



Q3: A simple device that is used to either break or complete the electric circuit, is called ________ .

(a) Switch
(b) Terminal
(c) Current
(d) Conductor

Q4: Electric Cell (Battery) as shown in the figure, pointer 'A' indicates ______________.

(a) Filament
(b) Holder
(c) Positive Terminal
(d) Negative Terminal



Q5: Electric Cell (Battery) as shown in the figure, pointer 'B' indicates ______________.

CBSE Class 9 Political Science - CH2 - What is Democracy? Why Democracy? - NCERT Solutions

What is Democracy? Why Democracy?

NCERT Book Solutions for Class 9

Q1: Here is some information about four countries. Based on this information, how would you Classify each of these countries. Write ‘democratic’, ‘undemocratic’ or ‘not sure’ against each of these.

1. Country A: People who do not accept the country’s official religion do not have a right to vote
2. Country B: The same party has been winning elections for the last twenty years.
3. Country C: Ruling party has lost in the last three elections
4. Country D: There is no independent election commission

Answer:

(a) undemocratic
(b) not sure
(c) democratic
(d) undemocratic

Q2: Here is some information about four countries. Based on this information, how would you Classify each of these countries. Write ‘democratic’, ‘undemocratic’ or ‘not sure’ against each of these.

1. Country P: The parliament cannot pass a law about the army without the consent of the Chief of Army
2. (b) Country Q: The parliament cannot pass a law reducing the powers of the judiciary
3. (c) Country R: The country’s leaders cannot sign any treaty with another country without taking permission from its neighbouring country.
4. (d) Country S: All the major economic decisions about the country are taken by officials of the central bank which the ministers cannot change.

Answer:

(a) undemocratic
(b) democratic
(c) undemocratic
(d) undemocratic

Q3: Which of these is not a good argument in favour of democracy? Why?

1. People feel free and equal in a democracy
2. Democracies resolve conflict in a better way than others
3. Democratic government is more accountable to the people
4. Democracies are more prosperous than others

Answer: The argument ‘d’, which states that “Democracies are more prosperous than others”does not fit in favour of democracy. It is because democratic countries like India are still developing economically while there are monarchies like UAE, Kuwait that are economically rich.

Q4: Each of these statements contains a democratic and an undemocratic element. Write out the two separately for each statement:

1. A minister said that some laws have to be passed by the parliament in order to conform to the regulations decided by the World Trade Organisation.
2. The Election Commission ordered re-polling in a constituency where large scale rigging was reported.
3. Women’s representation in the parliament has never reached 10 per cent. This led women’s organisations to demand one-third seats for women.

Answer:

1. Democratic element: some laws have to be passed by the parliament
   Undemocratic element: conform to the regulations decided by the World Trade Organisation
2. Democratic element: the Election Commission ordered re-polling
   Undemocratic element:  large scale rigging was reported
3. Democratic element:  this led to women’s organisations to demand one third seats for women
   Undemocratic element: women’s representation in the parliament has never reached 10 per cent

Q5: Which of these is not a valid reason for arguing that there is a lesser possibility of famine in a democratic country?
   a. Opposition parties can draw attention to hunger and starvation.
   b. Free press can report suffering from famine in different parts of the country.
   c. Government fears its defeat in the next elections.
   d. People are free to believe in and practise any religion.

CBSE Class 6 - Science - CH11 - Light, Shadows and Reflection (MCQs)

Light, Shadows and Reflections

MCQs

Sun Dial at Jantar Mantar in Delhi.
Do you know it uses the principles of Light and Shadows?
Do you want to make your own Sun Clock (Dial)? See below.

Q1: Objects that emit light on their own are called ___________

(a) Ligth Objects
(b) Luminous bodies
(c) Non-Luminous bodies
(d) Opaque bodies

Q2: Which one of the following is not a luminous object?

(a) lit candle
(b) sun
(c) star
(d) moon

Q3: If we are able to see anything clearly through an object, then such an object is said to be a _______ object.

(a) transparent
(b) translucent
(c) opaque
(d) none of these

Q4: A _______ eclipse occurs when earth comes between sun and moon in a straight line.

(a) solar
(b) lunar
(c) shadow
(d) none of these

Q5: The shape of a shadow depends on which of the following.

CBSE Class 10 - NTSE SAT Quiz - 24

NTSE (SAT) Quiz-24

Q1: Which of the following is a plant hormone?

(a) Insulin
(b) Cytokinin
(c) Oestrogen
(d) Thyroxin

Q2: A wire with black insulation in a household electric supply is:

(a) live wire
(b) earth wire
(c) neutral wire
(d) fuse wire

Q3: A solution turns red litmus blue. The pH of the solution is:

(a) 7
(b) 1
(c) 5
(d) 10

Q4: Which one of the following is responsible for ozone layer depletion?

(a) CFC
(b) CO2
(c) SO2
(d) O2

Q5: The change of focal length of an eye lens is caused by an action of the

(a) pupil
(b) retina
(c) cilliary muscles
(d) iris

CBSE Class 10 Science CHEMICAL REACTIONS AND EQUATIONS - Board Questions (2008-2014) and Answers

CHEMICAL REACTIONS AND EQUATIONS

Board Questions (2008-2014) and Answers

Q1(2008): What happens chemically when quick lime is added to water?

Answer: Quick lime is CaO which reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.

                           CaO(s) + H₂O(l) → Ca(OH)₂(aq)

Q2: A student burns magnesium ribbon in the lab and observes a white powder falling on the table. What type of reaction has taken place and name the white powder?

Answer: It is a chemical reaction. The white powder formed is magnesium oxide (MgO).

Q3: What are the essentials of a chemical reaction?

Answer:

• It should be balanced and confirm to the law of conservation of matter
• It should be molecular
• It must refer to an actual chemical equation

Q4: How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal?

Answer: When a burning match stick is brought near the mouth of the test tube in which reaction is taking place, it will burn with popping sound. It detects the presence of hydrogen (H₂) gas.

Q5: What change in colour is observed when white silver chloride is left exposed to sunlight? What type of chemical reaction is this?

Answer: White silver chloride turns grey in sunlight. This is due to the decomposition of silver chloride into silver and chlorine by light.It is a photo-chemical decomposition reaction.

                2AgCl(s) —^Sunlight—→ 2Ag(s) + Cl₂(g)

Q6: Why is respiration considered as exothermic process?

Answer: In respiration heat is released so it is termed as an exothermic reaction.

                   C₆H₁₂O₆ + 6O₂ —→ 6CO₂ + 6H₂O + energy

Q7(2010):What is meant by skeletal equation?

Answer: The equation which is unbalanced because the mass is not the same on both sides of the equation, is a skeletal chemical equation for a reaction.

During exam, try to write chemical equations and chemical formulae in your answers wherever possible. It enhances visibility and gives you more scores.

Q8: Identify the type of reaction in the following example:

Na₂SO₄(aq) + BaCl₂(aq) —→ BaSO₄(s) + 2NaCl(aq)

Answer: A double displacement reaction.

Q9: Why are bags of chips flushed with nitrogen gas?

Answer: Chips manufacturers usually flush bags of chips with gas such as nitrogen to prevent the chips from getting oxidised.

Q10 : What is precipitation reaction?