The three rational numbers between 3 and 4 are:
Anonymous Quiz
32%
5/2, 6/2, 7/2
46%
13/4, 14/4, 15/4
15%
12/7, 13/7, 14/7
7%
11/4, 12/4, 13/4
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Every rational number is:
Anonymous Quiz
22%
Whole number
11%
Natural number
16%
Integer
51%
Real number
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Pata chala ki nahi?π±
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ππAaj Science Chapter IS MATTER AROUND US IS PURE? ke MCQ's krte hai
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What is the effect of temperature on the solubility of a salt?
Anonymous Quiz
26%
It increases with decrease in temperature
19%
It decreases with increase in temperature
41%
It increases with increase in temperature
14%
It does not depend on temperature
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According to the definition of pure substance, which of the following is a pure substance?
Anonymous Quiz
13%
Ice
17%
Mercury
18%
Iron
52%
All of these
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What is true about homogeneous mixture?
Anonymous Quiz
18%
Homogeneous mixture is the mixture of two or more than two components.
26%
In homogeneous mixture the composition and properties are uniform throughout the mixture
52%
both (a) and (b) are true
4%
none of the above
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Which of the following is not a homogeneous mixture?
Anonymous Quiz
25%
Air
31%
Tincture of iodine
16%
Sugar solution
29%
Milk
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Solid solution in which the solute is gas ββββ
Anonymous Quiz
14%
Copper dissolved in gold
34%
Camphor in nitrogen gas
19%
Solution of hydrogen in palladium
33%
All of the above
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βοΈβοΈApke liye Science Chapter Matter in Surrounding ka Question Agay hai ππ
π΄ Give reason for the following observations:
(a) Naphthalene balls disappear with time without leaving any solid.
(b) We can get the smell of perfume while sitting several meters away.
Jaldi Jaldi Se sab iska answer comment section mai btado ππ
@pwneevclass9 π±π²
βοΈβοΈApke liye Science Chapter Matter in Surrounding ka Question Agay hai ππ
π΄ Give reason for the following observations:
(a) Naphthalene balls disappear with time without leaving any solid.
(b) We can get the smell of perfume while sitting several meters away.
Jaldi Jaldi Se sab iska answer comment section mai btado ππ
@pwneevclass9 π±π²
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ππAnswer of the Question ππ
(a) Naphthalene balls undergo sublimation at room temperature i.e. they directly get converted from solid to gaseous state without leaving any residue behind.
(b) We get the smell of perfume sitting several metres away due to diffusion. The particles of perfume mix with particles of air and due to high speeds of these particles, the smell of perfume reaches us sitting several metres away.
Sab Apni Apni mistakes check krna or pdhai krte rhna βοΈβοΈ
Good luck, @pwneevclass9β
β
(a) Naphthalene balls undergo sublimation at room temperature i.e. they directly get converted from solid to gaseous state without leaving any residue behind.
(b) We get the smell of perfume sitting several metres away due to diffusion. The particles of perfume mix with particles of air and due to high speeds of these particles, the smell of perfume reaches us sitting several metres away.
Sab Apni Apni mistakes check krna or pdhai krte rhna βοΈβοΈ
Good luck, @pwneevclass9
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π49π2
Hello Baccho ππΌππΌ
β
Science Chapter Atoms And Molecules ke Mcq's Aa rhey hai π
π Tayyar ho jao, or haan Cheating nhi krna koi bhiβ
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π Tayyar ho jao, or haan Cheating nhi krna koi bhi
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π9π¦4
In ionic compounds, the charge on each ion is used to determine the ________of the compound.
Anonymous Quiz
19%
Sulphate
44%
chemical formula
22%
Molecular formula
15%
chemical compound
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The abbreviation used for lengthy names of
elements are termed as their ________.
elements are termed as their ________.
Anonymous Quiz
54%
symbol
23%
formula
15%
element
8%
molecule
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Those particles which have more or less electrons than the normal atoms are called ions.
Anonymous Quiz
70%
True
30%
False
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The valency of an ion is _______ to the charge on the ion.
Anonymous Quiz
61%
equal
26%
Not equal
12%
Completely Different
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AI Guru, your personal AI tutor, is now live in the app, ready to assist you 24/7 on your learning journey! π in NEEV 3.0 Batch π₯
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