CBSC NET -July 2016 TENTATIVE A SWER KEY FOR PAPPER 1 part 1

Paper – I

Note:

• This paper contains Sixty (60) multiple choice questions, each question carrying two (2) marks.

• Candidate is expected to answer any Fifty (50) questions.

• In case more than Fifty (50) questions are attempted, only the first Fifty (50) questions will be evaluated.

The following table shows the percentage profit (%) earned by two companies A and B during the years 2011 - 15. Answer questions 1 - 3 based on the data contained in the table:

Profit earned by the companies

Year and profit by A and B

Year and profit by A and B

Year	Percentage Profit (%)
	A	B
2011	20	30
2012	35	40
2013	45	35
2014	40	50
2015	25	35

Where, percent (%) Profit $=\frac{I\mathrm{n}\mathrm{c}\mathrm{o}\mathrm{m}\mathrm{e}-\mathrm{E}\mathrm{x}\mathrm{p}\mathrm{e}\mathrm{n}\mathrm{d}\mathrm{i}\mathrm{t}\mathrm{u}\mathrm{r}\mathrm{e}}{\mathrm{E}\mathrm{x}\mathrm{p}\mathrm{e}\mathrm{n}\mathrm{d}\mathrm{i}\mathrm{t}\mathrm{u}\mathrm{r}\mathrm{e}}\times 100$

1. In which year, the percentage profit earned by the company B is less than that of company A?

(1) 2012

(2) 2013

(3) 2014

(4) 2015

Answer: 2

2. If the total expenditure of the two companies was Rs. 9 lakh in the year 2012 and the expenditure of A and B were in the ratio$2: 1$, then what was the income of the company A in that year?

(1) Rs. $9.2$ lakh

(2) Rs. $8.1$ lakh

(3) Rs. $7.2$ lakh

(4) Rs. $6.0$ lakh

Answer: 2

3. What is the average percentage profit earned by the company B?

(1) $35\%$

(2) $42\%$

(3) $38\%$

(4) $40\%$

Answer: 3

The table shows the number of people in different age groups who responded to a survey about their favourite style of music. Use this information to answer the questions that follow:

Number of people and styles of music

Number of people and styles of music

	Number of people
Ages $\Rightarrow$	(years) 15 - 20	(years) 21 - 30	(years) 31+
Style of Music $\Downarrow$
Classical	6	4	17
Pop	7	5	5
Rock	6	12	14
Jazz	1	4	11
Blues	2	3	15
Hip-Hop	9	3	4
Ambient	2	2	2

4. What percentage of respondents aged 31 + indicated a favorite style other than classical music?

1. 64%

2. 60%

3. 75%

4. 50%

Answer: 3

5. Approximately what percentage of the total sample were aged 21 - 30?

1. 31%

2. 23%

3. 25%

4. 14%

Answer: 3

6. Approximately what percentage of the total sample indicates that Hip-Hop is their favourite style of music?

1. 6%

2. 8%

3. 14%

4. 12%

Answer: 4

7. The process of copying files to a CD-ROM is known as________

1. Burning

2. Zipping

3. Digitizing

4. Ripping

Answer: 1

8. An unsolicited e-mail message sent to many recipient at once is a________

1. Worm

2. Virus

3. Threat

4. Spam

Answer: 4

9. The statement " the study, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware" refers to

1. Information Technology (IT)

2. Information and collaborative Technology (ICT)

3. Information and data Technology (IDT)

4. Artificial Intelligence (AI)

Answer: 1

10. If the binary equivalent of the decimal number 48 is 110000, then the binary equivalent of the decimal number 51 is given by

1. 110011

2. 110010

3. 110001

4. 110100

Answer: 1

11. Identify the air pollutant in urban areas which irritates eyes and also respiratory tract of human beings.

1. Particulate matter

2. Oxides of nitrogen

3. Surface ozone

4. Carbon monoxide

Answer: 3

12. Which of the following is the largest source of water pollution in major rivers of india?

1. Untreated sewage

2. Agriculture run-off

3. Unregulated small scale industries

4. Religious practices

Answer: 1

13. Sustainable development goals have specific targets to be achieved by

1. 2022

2. 2030

3. 2040

4. 2050

Answer: 2

14 Indian government's target of producing power from biomass by the year 2022, is

1. 50 MW

2. 25 MW

3. 15 MW

4. 10 MW

Answer: 4

15. Assertion (A): Conserving our soil resources is critical to human survival.

Reason (R): Soil is home to many micro-organisms and contains minerals.

Choose the correct code:

1. Both (A) and (R) are correct and (R) is the correct explanation of (A)

2. Both (A) and (R) are correct but (R) is not the correct explanation of (A)

3. (A) is true and (R) is false

4. (A) is false and (R) is true

Answer: 2

16. World Meteorological Organization's (WMO) objective has been to reduce the number of deaths due to hydro meteorological disasters over the decade 2010 - 2019 by (with reference to the decade 1994 - 2003)

1. 25%

2. 50%

3. 75%

4. 80%

Answer: 2

17. ________is a type of memory circuitry that holds the computer's start-up routine.

1. RIM (Read Initial Memory)

2. RAM (Random Access Memory)

3. ROM (Read Only Memory)

4. Cache Memory

Answer: 3

18. An ASCII is a character-encoding scheme that is employed by personal computers in order to represent various characters, numbers and control keys that the computer used selects on the keyboard. ASCII is an acronym for

1. American Standard Code for Information Interchange

2. American Standard Code for Intelligent Information

3. American Standard Code for Information Integrity

4. American Standard Code for Isolated Information

Answer: 1

19. The National Judicial Appointments Commission (NJAC) has been declared unconstitutional by

1. The Supreme Court of India

2. The High Court

3. The High Court and the Supreme Court both

4. The President of India

Answer: 1

20. Which of the following statements about the Indian political system is/are correct?

(a) The president is both Head of the State and Head of the Government.

(b) Parliament is Supreme.

(c) The Supreme Court is the guardian of the Constitution.

(d) The Directive Principles of State Policy are justifiable.

Select the correct answer from the codes given below:

1. (a), (b), (c) and (d)

2. (b), (c) and (d)

3. (b) and (c)

   4. (c) only

Answer: 3

Par 2 continues