CBSE Class 10 - Science - CH2 - Acids, Bases and Salts (Worksheet)

Acids, Bases and Salts

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Worksheet

Fill in the Blanks

1. Blue litmus changes into red colour in the presence of_______.

2. The acid present in lemon juice is _______.

3. Red litmus changes into blue colour in the presence of ______.

4. The chemical name of Plaster of Paris is ___________ and its chemical formula is ____________.

5. Methyl orange gives __________ in basic medium while phenolphthalein gives _______.

6. Example for strong acid is ________.

7. Example for weak acid is ________

8. Example for strong base is_______.

9. Example for weak base is ____________

CBSE Class 12: Business Studies - CH4: Planning (V Short Q and A)

Planning

V Short Q & A

Q1: Define Planning.

Answer: Planning in deciding in advance what to do and how to do. Before doing something, the manager always formulates an idea of how to work on a particular task.
Planning is selecting and relating of facts and making and using of assumptions regarding the future in the visualization and formulation of proposed activities believed necessary to achieve desired results.

Q2: What is meant by Market Orientation?

Answer: It means the firms start producing goods after analysing the market needs/requirements.

Q3: The planning function of management is conducted at which level of management?

Answer: At all the three levels.

Q4: Is planning all-pervasive function of managment? How?

Answer: Yes. It is a continuous process. All other functions of organizing, staffing, directing and controlling must reflect planning function of management. It prevails all levels of organization and departments.

Q5: What all qualities are required for doing planning?

Answer: Intelligence, Imagination, Foresight, Sound Judgment.

Q6: Planning strangulates the initiative of the employees and compels them to work in an inflexible manner”. What does it imply?

Answer: Planning reduces creativity.

Q7: Point out whether Planning is a physical or mental activity.

Answer: Planning is a mental activity. It requires application of the mind involving creative thinking and imagination, foresight & judgment. A manager can make efficient plans only when he has sound judgment, foresignt & vision. Planning, in not mere guess work but involves logical and systematic approach.

Q8: How does planning create rigidity?

Answer: Planning creates rigidity by putting adverse effect on initiative taken by the managers.

Q9: Which limitation of planning suggest that the employees stop thinking and become the blind followers of Plan?

Answer: Planning reduces creativity.

Q10: Does planning help eliminating risk?

CBSE Class 9/10 - English Grammar - Cloze Test (PSA Quiz)

CLOZE TEST

Directions : In Question Nos. 1 to 10 you have following a brief passage with 10 questions.
Read the passages carefulIy and fill in the blanks with, out of the four alternatives given.

Passage 

Without water __1__ animal can survive. In desert regions, the greatest  ____2____ to life is drying up. But many creatures are able to make use of ___3___  little water that exists in arid areas. One of nature’s  masterpieces ___4___ creatures equipped to ___5____ with desert life is the hardy camel. There are several stories describing the ___6___ endurance of these animals.  It is said that camels can ___7___ a distance of about 800 miles in eight days through continuous travel ___8___ an intake of a single drop of water. The popular ___9___ in a way is  ___10___. Water is indeed stored there but in the form of fat.


Questions:

CBSE Class 10 - History - THE AGE OF INDUSTRIALISATION (MCQs)

THE AGE OF INDUSTRIALISATION

(MCQs)

Industrial Revolution led to pathetic conditions
for women and children.
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Q1: When did the earliest factories come up in England?

(a) 1720s
(b) 1730s
(c) 1740s
(d) 1750s


Q2: Guilds were associations of

(a) Industrialization
(b) Exporters
(c) Traders
(d) Producers


Q3: Which one of the following factories was considered as a symbol of new era in England in the late eighteenth century?

(a) Iron and steel
(b) Metal
(c) Jute
(d) Cotton


Q4: Who invented the steam engine

(a) New Camen
(b) Richard Arkwright
(c) James Watt
(d) None of the above

Q5: In India, the first cotton mill was set up in

(a) Madras
(b) Bombay
(c) Kanpur
(d) Surat

CTET : CHILD DEVELOPMENT AND PEDAGOGY - MCQs-7

CHILD DEVELOPMENT AND PEDAGOGY

(MCQs-7 - From CTET Feb 2014 Examination Paper)

Q1: In the progressive model of education as implemented by CBSE, socialization of children is done in such a way so as to expect them to

(a) give up time-consuming social habits and learn how to score good grades

(b) be an active participant in the group work and learn social skills

(c) prepare themselves to conform to the rules ánd regulations of society without questioning

(d) accept what they are offered by the school irrespective of their social background


Q2: Which of the following is based on Vygotsky’s sociocultural theory?

(a) Operant conditioning
(b) Reciprocal teaching
(c) Culture-neutral cognitive development.
(d) Insight learning


Q3: A teacher saýs to her clas, “As individual assignments are designed to help individual students learn more effectively, all students should complete assignments prescribed without any assistance." She is referring to which of the following stages of Kohlberg’s moral development?

(a) Conventional stage 4 — law and order
(b) Post-conventional stage 5 — social contract
(c) Pre-conventional stage 1 — punishment avoidance
(d) Pre-conventional stage 2 — individualism and exchange


Q4: Fourteen-year-old Devika is attempting to develop a sense of herself as a separate, sell-governing individual. She is developing:

(a) hatred for rules
(b) autonomy
(c) teenage arrogance
(d) maturity


Q5: In context of progressive education, which of the following statements is true according to John Dewey?

Class 12 - Business Studies - CH3: Business Environment (Short Q and A)

Business Environment

Very Short Q & A 

Dimensions of Business Environment

Q1: Define Business Environment

Answer: The totality of all individuals, institutions and other forces that are outside a business enterprise but that may affect its functioning and performance.

Q2: Give one importance of business environment?

Answer: It enables the firm to identify opportunities & getting the first movers advantages.

Q3: Which environment describes characteristics of the society in which the organization exists?

Answer: Social Environment

Q4:How have customers benefited by increased competition after liberalisation and globalisation?

Answer: At the time of purchase customers get a wider choice of products and services. They can compare quality of the products.

Q5: List any two elements of political environment?

Answer:

CBSE Class 10: Maths - CH2 - Polynomials (NCERT EX 2.2)

Polynomials

NCERT Solutions Ex 2.2

Q1: Find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients.
(i)  x²-2x-8
(ii) 4s²-4s+1
(iii) 6x²-3-7x
(iv) 4u²+8u
(v) t²-15
(vi) 3x² - x -4

Answer: (i)  x²-2x-8 = (x - 4)(x +2)
⇒x²-2x-8 = 0 when x - 4= 0 or x + 2 = 0
∴ Zeroes of x²- 2x - 8 are 4 and -2.
Sum of zeroes =
Product of zeroes =
Hence relationship between zeroes and coefficients are verified.

(ii) 4s²-4s+1
= (2s -1 )²
⇒ 4s²-4s+1 = 0 when 2s -1 = 0
⇒ s = 1/2
∴ Zeroes of 4s²-4s+1 are ½ and ½.
Sum of zeroes =
Product of zeroes =
Hence relationship between zeroes and coefficients are verified.

(iii) 6x²-3-7x
= (3x + 1)(2x - 3)
⇒ 6x²-3-7x = 0 when 3x + 1 = 0 OR 2x - 3 = 0
⇒ x = -1/3 or x = 3/2 ∴ Zeroes of 6x²-3-7x are -1/3 and 3/2
Sum of zeroes =
Product of zeroes =
Hence relationship between zeroes and coefficients are verified.

(iv) 4u²+8u
= 4u(u + 2)
⇒ 4u²+8u = 0 when 4u = 0 OR u + 2 = 0
⇒ u = 0 OR u = -2
∴ Zeroes of 4u²+8u are 0 OR -2
Sum of zeroes =
Product of zeroes =

Hence relationship between zeroes and coefficients are verified.

(v) t²-15
= t² - 0t -15 = (t - √15)(t + √15)
⇒ The value of t²-15 is 0 when t - √15 = 0 OR t + √15 = 0
⇒ t = √15 or t = -√15.
Sum of zeroes = √15 -√15 = 0
Product of zeores = (√15) ☓ (-√15) = -15
Hence relationship between zeroes and coefficients are verified.