Board Paper of Class 10 2009 Science (SET 3) - Solutions
1. Attempt all questions.
2. There are 30 multiple choice questions in total. Only one of the options in every question is correct.
3. The question paper consists of two sections – Section A and Section B. Each of the 20 questions in Section A carries half mark and each of the 10 questions in Section B carries one mark.
4. 15 minutes additional time will be given to you to read the questions.
- Question 1
While doing an experiment on plotting the temperature vs. time graph of hot water as it cools, we can get a good graph
(1) only by noting the temperature of hot water every 30 seconds throughout.
(2) only by noting the temperature of hot water every 1 minute throughout.
(3) by noting the temperature of hot water every 1 minute to start with and every 2 minutes later on.
(4) by noting the temperature of hot water every 2 minutes to start with and every 1 minute later on.
VIEW SOLUTION
- Question 2
In an experiment on determining the velocity of a pulse propagating through a stretched string, the stop-watch should be started and stopped at instants corresponding to the ones shown in
(1) Figure 1 and Figure 2
(2) Figure 1 and Figure 3
(3) Figure 2 and Figure 1
(4) Figure 2 and Figure 3
VIEW SOLUTION
- Question 3
The diagrams given above, show tissues of some plants and/or animals. The diagrams showing animal tissues are
(1) I and III
(2) II and III
(3) I and IV
(4) II and IV
VIEW SOLUTION
- Question 4
The animal whose figure is given below is included in its phylum because of the part labelled as
(1) I
(2) II
(3) III
(4) IV
VIEW SOLUTION
- Question 5
A student mixed some acetic acid with water. He would have observed the solution formed as
(1) Green and transparent
(2) Pink and opaque
(3) Yellow and transparent
(4) Colourless and transparent
VIEW SOLUTION
- Question 6
While performing an experiment on determining the focal length of a convex lens a student obtains a sharp inverted image of the laboratory window grills on the screen and measures the distance d between the screen and the lens. She then repeats the experiment and takes a distant tree as the object in the second case. In order to get a sharp image on the screen, she will now need to move the screen
(1) slightly nearer to the lens
(2) slightly farther away from the lens
(3) very close to the lens
(4) very far away from the lens
VIEW SOLUTION
- Question 7
Out of the two circuits shown here, the two resistors R1 and R2 have been correctly connected in series in
(1) circuit A only
(2) circuit B only
(3) both circuits A and B
(4) neither of the two circuits
VIEW SOLUTION
- Question 8
In an experiment on studying the dependence of the current (I), flowing through a given resistor on the potential difference (V) applied across it, a student is to change the value of the current. For doing this, he can change the
(1) number of cells used or by setting the battery eliminator
(2) resistor itself
(3) ammeter used in the circuit
(4) voltmeter used in the circuit
VIEW SOLUTION
- Question 9
A student by mistake mixed sulphur powder with iron filings. The following techniques were suggested to him to separate the sulphur from the mixture, out of which he has to choose one:
A. dissolving in carbon disulphide, filtration, evaporation
B. dissolving in water at room temperature and filtration
C. dissolving in hot water, filtration and evaporation
D. dissolving in ice cold water and filtration
The correct technique is
(1) A
(2) B
(3) C
(4) D
VIEW SOLUTION
- Question 10
Four students did their experiment on studying the cooling caused by evaporation of alcohol and recorded the following as their observations:
A. After dipping in alcohol, the cotton plug absorbs alcohol and becomes pale blue.
B. After attaching the cotton plug dipped in alcohol to the bulb of the thermometer and exposing the thermometer to air, the temperature starts falling
C. After evaporation is complete, temperature starts increasing
D. Tiny bubbles of alcohol escape from the surface of the cotton plug.
The correct observations are those of students
(1) B and D
(2) B and C
(3) A and C
(4) A and D
VIEW SOLUTION
- Question 11
A student does the labelling, indicated below, for the apparatus used for separating a mixture of camphor and sand
The parts that have been incorrectly labelled are
(1) I, II, VII
(2) III, IV, V
(3) II, III, VI
(4) VII, V, I
VIEW SOLUTION
- Question 12
The figure given below shows plant cells which had been placed in
(1) an isotonic solution
(2) a hypertonic solution
(3) an isosmotic solution
(4) a hypotonic solution
VIEW SOLUTION
- Question 13
On putting few drops of an unknown liquid on pH strip, the colour of pH strip changed to green. The liquid taken is likely to be
(1) water
(2) dilute hydrochloric acid
(3) lemon juice
(4) dilute sodium hydroxide solution
VIEW SOLUTION
- Question 14
The following set-up is used for the preparation of sulphur dioxide gas
For this set-up identify the only correct statement from the following:
(1) Tip of the delivery tube should not dip in the sulphuric acid
(2) Tip of the thistle funnel should not dip in the sulphuric acid
(3) Burner is not required
(4) Wire gauze is not required
VIEW SOLUTION
- Question 15
The chemical required in the experiment to show that carbon dioxide gas is released during respiration, is
(1) Potassium bicarbonate
(2) Potassium dichromate
(3) Potassium permanganate
(4) Potassium hydroxide
VIEW SOLUTION
- Question 16
The formula used for calculating the percent water absorbed, when pre-weighed dry raisins are placed in water for two hours, and weighed again is
(1)
(2)
(3)
(4)
VIEW SOLUTION
- Question 17
To prepare a good temporary mount of the Petunia leaf peel showing many stomata, the student has to get the peel from the
(1) tip of the leaf
(2) upper surface of the leaf
(3) lower surface of the leaf
(4) point of attachment of the leaf to its petiole
VIEW SOLUTION
- Question 18
Which of the following experimental arrangements is correct for determination of melting point of ice?
(1) I
(2) II
(3) III
(4) IV
VIEW SOLUTION
- Question 19
A student is given an iron cube of side 1 cm, a measuring cylinder of range 100 mL and least count 1 mL and a spring balance of range 100 gwt and least count 1 gwt. He can use these to measure
(1) both the mass and the volume of the given iron cube
(2) neither the mass nor the volume of the given iron cube
(3) only the mass of the given iron cube but not its volume
(4) only the volume of the given iron cube but not its mass
VIEW SOLUTION
- Question 20
Three students are given three identical solids. They measure the volume of water overflowing out of the three overflow cans as shown. When they dip these solids completely in water the volumes of overflow water are denoted as VA, VB, and VC.
It will be found that
(1) VA = VB = VC
(2) VA = VB ≠ VC
(3) VA ≠ VB = VC
(4) VC = VA ≠ VB
VIEW SOLUTION
-
Board Paper of Class 10 2023 Science Delhi(Set 1) - Solutions
-
Board Paper of Class 10 2023 Science Delhi(Set 2) - Solutions
-
Board Paper of Class 10 2023 Science Delhi(Set 3) - Solutions
-
Board Paper of Class 10 Science Term-II 2022 Delhi(Set 1) - Solutions
-
Board Paper of Class 10 Science Term-II 2022 Delhi(Set 2) - Solutions
-
Board Paper of Class 10 Science Term-II 2022 Delhi(Set 3) - Solutions
-
Board Paper of Class 10 Science Term-I 2021 Delhi(Set 4) - Solutions
-
Board Paper of Class 10 2020 Science Delhi(Set 1) - Solutions
-
Board Paper of Class 10 2020 Science Delhi(Set 2) - Solutions
-
Board Paper of Class 10 2020 Science Delhi(Set 3) - Solutions
-
Board Paper of Class 10 2019 Science Delhi(Set 1) - Solutions
-
Board Paper of Class 10 2019 Science Delhi(Set 2) - Solutions
-
Board Paper of Class 10 2019 Science Delhi(Set 3) - Solutions
-
Board Paper of Class 10 2019 Science All India(Set 1) - Solutions
-
Board Paper of Class 10 2019 Science Abroad(Set 2) - Solutions
-
Board Paper of Class 10 2018 Science (SET 1) - Solutions
-
Board Paper of Class 10 2018 Science (SET 2) - Solutions
-
Board Paper of Class 10 2018 Science (SET 3) - Solutions
-
Board Paper of Class 10 2018 Science (SET 1) - Solutions
-
Board Paper of Class 10 2018 Science (SET 2) - Solutions
-
Board Paper of Class 10 2018 Science (SET 3) - Solutions
-
Board Paper of Class 10 2018 Science (SET 1) - Solutions
-
Board Paper of Class 10 2018 Science (SET 2) - Solutions
-
Board Paper of Class 10 2018 Science (SET 3) - Solutions
-
Board Paper of Class 10 2017 Science (SET 1) - Solutions
-
Board Paper of Class 10 2017 Science (SET 2) - Solutions
-
Board Paper of Class 10 2017 Science (SET 3) - Solutions
-
Board Paper of Class 10 2017 Science (SET 1) - Solutions
-
Board Paper of Class 10 2017 Science (SET 2) - Solutions
-
Board Paper of Class 10 2017 Science (SET 3) - Solutions
-
Board Paper of Class 10 2017 Science (SET 3) - Solutions
-
Board Paper of Class 10 2016 Science (SET 1) - Solutions
-
Board Paper of Class 10 2016 Science (SET 2) - Solutions
-
Board Paper of Class 10 2016 Science (SET 3) - Solutions
-
Board Paper of Class 10 2016 Science (SET 3) - Solutions
-
Board Paper of Class 10 2016 Science (SET 1) - Solutions
-
Board Paper of Class 10 2015 Science (SET 1) - Solutions
-
Board Paper of Class 10 2012 Science (SET 3) - Solutions
-
Board Paper of Class 10 2012 Science (SET 3) - Solutions
-
Board Paper of Class 10 2012 Science (SET 2) - Solutions
-
Board Paper of Class 10 2015 Science (SET 2) - Solutions
-
Board Paper of Class 10 2015 Science (SET 3) - Solutions
-
Board Paper of Class 10 2015 Science (SET 1) - Solutions
-
Board Paper of Class 10 2015 Science (SET 2) - Solutions
-
Board Paper of Class 10 2015 Science (SET 3) - Solutions
-
Board Paper of Class 10 2015 Science (SET 3) - Solutions
-
Board Paper of Class 10 2014 Science (SET 1) - Solutions
-
Board Paper of Class 10 2014 Science (SET 2) - Solutions
-
Board Paper of Class 10 2014 Science (SET 1) - Solutions
-
Board Paper of Class 10 2014 Science (SET 2) - Solutions
-
Board Paper of Class 10 2013 Science (SET 1) - Solutions
-
Board Paper of Class 10 2013 Science (SET 2) - Solutions
-
Board Paper of Class 10 2013 Science (SET 3) - Solutions
-
Board Paper of Class 10 2011 Science (SET 3) - Solutions
-
Board Paper of Class 10 2010 Science (SET 3) - Solutions
-
Board Paper of Class 10 2009 Science (SET 1) - Solutions
-
Board Paper of Class 10 2009 Science (SET 2) - Solutions
-
Board Paper of Class 10 2009 Science (SET 3) - Solutions
-
Board Paper of Class 10 2009 Science (SET 1) - Solutions
-
Board Paper of Class 10 2009 Science (SET 2) - Solutions
-
Board Paper of Class 10 2009 Science (SET 3) - Solutions
-
Board Paper of Class 10 2009 Science (SET 1) - Solutions
-
Board Paper of Class 10 2009 Science (SET 3) - Solutions
-
Board Paper of Class 10 2008 Science (SET 1) - Solutions
-
Board Paper of Class 10 2007 Science (SET 1) - Solutions
-
Board Paper of Class 10 2007 Science (SET 1) - Solutions
-
Board Paper of Class 10 2007 Science (SET 1) - Solutions
-
Board Paper of Class 10 2006 Science (SET 1) - Solutions
-
Board Paper of Class 10 2006 Science (SET 1) - Solutions
-
Board Paper of Class 10 2005 Science (SET 1) - Solutions
-
Board Paper of Class 10 2005 Science (SET 1) - Solutions
-
Board Paper of Class 10 2005 Science (SET 1) - Solutions