Question list of Math, Physics, chemistry, English, political science, Biology, EVS, Sociology, Psychology, accountancy, economics and science for CBSE ICSE SSC SSLC boards - Dated: 2020-06-09
770 The product of 150 negative integers and 1 positive integer is
___________
(ii) The value of -35 +29 = ________
(iii) The smallest negative integer is ________
(iv) On dividing any integer by 0, the result is always_______
(v) The value of an expression (-3) x (-2) x (-2) = ________
(vi) The value of expression (-45) ? (-5) = _______
(vii) When we divide a positive integer with negative integer, the
result so obtained is
________
(viii) ______ ? (-5) = -3
(ix) (-6) x (12) = _______
(x) (-4) x (-4) x 1 = ______
2 Write a negative integer and a positive integer whose difference
is 11
3 In a quiz, team A scored 20, -10, 34 and team B scored -10, 20,
34 in three successive
rounds Which team scored more?
4 In a quiz, 2 positive marks are allotted for each correct answer
and -1 for each incorrect
answer In four rounds of quiz, Reshma scored 45, -34, 40 and -36
marks and Radha scored
-42, 12, 28 and 38 marks Who scored more marks?
5 If a = -8, b = -7, c = 6, verify that (a + b) + c = a + (b + c)
778 1 Fill in the blanks:
(i) The product of 150 negative integers and 1 positive integer is
___________
(ii) The value of -35 +29 = ________
(iii) The smallest negative integer is ________
(iv) On dividing any integer by 0, the result is always_______
(v) The value of an expression (-3) x (-2) x (-2) = ________
(vi) The value of expression (-45) ? (-5) = _______
(vii) When we divide a positive integer with negative integer, the
result so obtained is
________
(viii) ______ ? (-5) = -3
(ix) (-6) x (12) = _______
(x) (-4) x (-4) x 1 = ______
2 Write a negative integer and a positive integer whose difference
is 11
3 In a quiz, team A scored 20, -10, 34 and team B scored -10, 20,
34 in three successive
rounds Which team scored more?
4 In a quiz, 2 positive marks are allotted for each correct answer
and -1 for each incorrect
answer In four rounds of quiz, Reshma scored 45, -34, 40 and -36
marks and Radha scored
-42, 12, 28 and 38 marks Who scored more marks?
5 If a = -8, b = -7, c = 6, verify that (a + b) + c = a + (b + c)
976 Mr Sunrise started a business for buying and selling of stationery
with5,00,000 as an initial
investment Of which, he paid R 1,00,000 for furniture, z2,00,000
for buying stationery items He
employed a sales person and clerk At the end of the month he paid
5,000 as their salaries
Out of the stationery bought, he sold some stationery for 1,50,000
for cash and some other
stationery for 1,00,000 on credit basis to Mr Ravi Subsequently, he
bought stationery items of
1,50,000 from Mr Peace In the first week of next month, there was a
fire accident and he lost
30,000 worth of stationery A part of the furniture, which costR
40,000, was sold for 45,000
From the above, answer the following:
(i) What is the amount of capital with which Mr Sunrise started
business
(ii) What are the fixed assets he bought?
(iii) What is the value of the goods purchased?
(iv) Who is the creditor and state the amount payable to him?
(v) What are the expenses?
(vi) What is the gain he earned?
(vii) What is the loss he incurred?
(viii) Who is the debtor? What is the amount receivable from
him?
(ix) What is the total amount of expenses and losses incurred?
(x) Determine if the following are assets, liabilities, revenues,
expenses or none of the these:
sales, debtors, creditors, salary to manager, discount to debtors,
capital of the owner
1427 HOPE
1570 1 Read the following passage carefully
Everyone knows that smoking and chewing tobacco is bad for health,
yet 250 million people in India- almost one fourth of the country?s
population consume some form of tobacco ?People think they can give
up tobacco use whenever they want But it?s not that easy Nicotine
is an addictive drug,? health minister Dr Ambumani Ramadoss told
the Hindustan Times
The World Health Organization links smoking to 25 cancers of head
and neck, urinary bladder, kidneys, cervix, pancreas and colon, to
name just a few Smoking is also a major risk factor for several
other diseases such as chronic bronchitis, heart disease, stroke,
impotence and premature death
?Most people link smoking to cancers, but it is the biggest cause
of heart disease Smoking increases the risk of clot formation in
the blood, which can block arteries and cause heart attack even in
healthy people,? says Dr R R Kashiwal, Director, Cardiology,
Escorts Heart Institute and Research Centre ?Lifestyle changes
don?t help much if a person continues smoking,? he adds
Smoking causes about 30 percent of all cancer deaths (including 90
percent of lung cancer deaths) According to Indian Council of
Medical Research, one million die of tobacco use in India every
year Reducing tobacco use is naturally a big priority for the
health minister
Despite the cigarette and other tobacco products (packaging and
labeling) rules banning smoking in public places and sale to minors
in India, the number of smokers is going up each year ?About ten
million children under the age of 15 are addicted to tobacco in
India,? says Ramadoss
The WHO estimates that of every 1,000 tobacco users today, 500 will
die of a tobacco related disease, 250 of them in their middle age
The current tobacco consumption trend in India indicates a shoot up
from 1 4 percent of deaths in 1990 to 13 3 percent in 2020
A proposal to carry graphic and direct health warnings such as
?Tobacco Kills? _ on all packages has been postponed indefinitely
because of pressure from the food industry, which claims farmers
and poor workers will lose jobs But thousands of lives will be
saved if the new warnings drive home the health hazards of tobacco
use more effectively ?The statutory warning currently carried on
tobacco products is in English, a language that a majority of the
population cannot read or understand,? says Ramadoss, who will
start a campaign to make workplaces smoke-free this year to protect
non-smokers from second hand smoke
Most people would stop tobacco if they knew what goes into making a
cigarette It has formaldehyde, the chemical used to pressure
animals in chemistry labs, cynamide found in rat poison; and
nicotine, which is a powerful insecticide Studies have shown that
bidis are even more harmful than cigarettes
?Tobacco is the second biggest cause of death in the world and
kills 5 million people- one in 10 adult deaths each year If that is
not reason enough to stop its use, I don?t know what is,? says
Ramadoss
a On the basis of your reading of the above passage, make notes on
it in points using headings and subheadings Use recognizable
abbreviations (minimum four) Also suggest a suitable title
(b) Give a summary of the passage in about 80 words
1591 Alone
2332 A= {1,2,3} and B={4,5,6,7} and f={(1,4),(2,5),(3,6)} be a function
from A to B, state whether f is one-one or onto
