Maths Group11
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The main purposes of this channel are to:
1. ๐Ÿ“ Provide various Mathematics questions and exercises.
2. ๐Ÿ“š Share and publish different educational books.
3. ๐Ÿ“– Provide useful short notes and study materials.

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๐Ÿ”ฅ5โค1
What is the magnetic field strength when a current of 6A flows in a wire 3m long and produces a force of 36N ?
Anonymous Quiz
6%
5 T
45%
6 T
36%
2 T
12%
3 T
Consider the following chemical equation:
PClโ‚… + Hโ‚‚O ------>Hโ‚ƒPOโ‚„ + HCl.
Then what is the coefficient of HCl after balancing of chemical equation?
Anonymous Quiz
16%
4
28%
1
48%
5
8%
3
โค1
For endothermic reactions, change in enthalpy (โˆ†H) is:
Anonymous Quiz
75%
Positive
20%
Negative
5%
Zero
0%
Not determined
How many moles of CaO are needed to react with excess water to produce 370 g of calcium hydroxide?
Anonymous Quiz
16%
4 mol
29%
5 mol
48%
12.4 mol
7%
3.033 mol
How many liters of sulphur trioxide are formed when 4800 cmยณ of sulphur dioxide is burned in air?
Anonymous Quiz
20%
48 L
28%
480 L
43%
4.8 L
9%
0.48 L
โค1
When 20g of sulphur dioxide reacts with oxygen, 23 g of sulphur trioxide is formed. What is the percentage yield?
Anonymous Quiz
7%
80%
37%
84%
21%
75%
35%
92%
โค1
What is the oxidation number of Fe in Kโ‚„[Fe(CN)โ‚†] ?
Anonymous Quiz
27%
+3
36%
+6
36%
+2
1%
+1
The reactions in which oxidation and reduction do not occur and such types of reactions are known as ___________.
Anonymous Quiz
11%
Redox reactions
7%
Oxidizing agents
6%
Reducing agents
75%
Non - redox reactions
๐Ÿ‘2
A catalyst increases the reaction rates by changing the reaction mechanism.
Anonymous Quiz
56%
True
44%
False
๐Ÿ’ฏ5
How many grams of oxygen can be prepared by the decomposition of 12 g of mercury (II) oxide? ( Atomic mass: Hg = 200 g/mol, oxygen= 16 g/mol.)
Anonymous Quiz
24%
0. 18 g
41%
12. 26 g
15%
0. 434 g
20%
0. 88 g
Forwarded from Exam Hub - High School
แ‰ตแˆแˆ…แˆญแ‰ต แˆšแŠ’แˆตแ‰ดแˆญ แค " แ‹จแ‹šแˆ… แŠ แˆ˜แ‰ต แ‹จ12แŠ› แŠญแแˆ แˆ€แŒˆแˆญ แŠ แ‰€แ แˆแ‰ฐแŠ“ แˆ˜แ‰ถ แ‰ แˆ˜แ‰ถ แ‰ แ‰ แ‹ญแА แˆ˜แˆจแ‰ฅ แ‹ญแˆฐแŒฃแˆ " แŠ แˆˆแข

แ‹จ2018 แ‹จ12แŠ› แŠญแแˆ แˆ›แŒ แŠ“แ‰€แ‰‚แ‹ซ แˆ€แŒˆแˆญ แŠ แ‰€แ แˆแ‰ฐแŠ“ แˆ˜แ‰ถ แ‰ แˆ˜แ‰ถ แ‰ แ‰ แ‹ญแА แˆ˜แˆจแ‰ฅ แˆˆแˆ˜แˆตแŒ แ‰ต แ‹จแˆšแ‹ซแˆตแ‰ฝแˆ แ‰…แ‹ตแˆ˜ แ‹แŒแŒ…แ‰ต แŠฅแ‹จแ‰ฐแ‹ฐแˆจแŒˆ แˆ˜แˆ†แŠ‘แŠ• แˆšแŠ’แˆตแ‰ดแˆฉ แŒˆแˆแŒฟแˆแข

แ‹จแ‰ตแˆแˆ…แˆญแ‰ต แˆšแŠ’แˆตแ‰ตแˆฉ แ•แˆฎแŒแˆฐแˆญ แ‰ฅแˆญแˆƒแŠ‘ แАแŒ‹ " แ‰ แ‹šแˆ… แ‹“แˆ˜แ‰ต แ‹จแˆšแˆฐแŒ แ‹ แ‹จ12แŠ› แŠญแแˆ แˆ›แŒ แŠ“แ‰€แ‰‚แ‹ซ แˆแ‰ฐแŠ“ แˆ˜แ‰ถ แ‰ แˆ˜แ‰ถ แ‰ แ‰ แ‹ญแА แˆ˜แˆจแ‰ฅ แ‹ญแˆฐแŒฃแˆ " แˆฒแˆ‰ แ‰ฐแŠ“แŒแˆจแ‹‹แˆแข

แ‹ญแˆ…แŠ• แ‹ซแˆ‰แ‰ต แ‰ แŠ แŒ แ‰ƒแˆ‹แ‹ญ แ‰ตแˆแˆ…แˆญแ‰ต แˆแˆ›แ‰ต แ‹˜แˆญแ แ‹จแŒแˆ›แˆฝ แ‹“แˆ˜แ‰ต แŠ แˆแƒแ€แˆ แˆ˜แ‹ตแˆจแŠญ แˆ‹แ‹ญ แ‰ฐแŒˆแŠแ‰ฐแ‹ แАแ‹แข

แ‰ฃแˆˆแ‰แ‰ต แˆแˆˆแ‰ต แ‹“แˆ˜แ‰ณแ‰ต แˆแ‰ฐแŠ“แ‹ แ‰ แ‹ˆแˆจแ‰€แ‰ตแŠ“ แ‰ แ‰ แ‹ญแА แˆ˜แˆจแ‰ฅ แˆฒแˆฐแŒฅ แŠฅแŠ•แ‹ฐแАแ‰ แˆญ แŠ แŠ•แˆตแ‰ฐแ‹ แ‰ แ‹šแˆ… แ‹“แˆ˜แ‰ต แ‹จแˆšแˆฐแŒ แ‹แŠ• แˆ›แŒ แŠ“แ‰€แ‰‚แ‹ซ แˆแ‰ฐแŠ“ แˆ™แˆ‰ แ‰ แˆ™แˆ‰ แ‰ แ‰ แ‹ญแА แˆ˜แˆจแ‰ฅ แˆˆแˆ˜แˆตแŒ แ‰ต แ‹จแˆšแ‹ซแˆตแ‰ฝแˆ แ‰…แ‹ตแˆ˜ แ‹แŒแŒ…แ‰ต แŠฅแ‹จแ‰ฐแ‹ฐแˆจแŒˆ แŠฅแŠ•แ‹ฐแˆ†แА แŒ แ‰แˆ˜แ‹‹แˆแข

แˆˆแ‹šแˆ…แˆ แ‹จแ‰ฐแˆˆแ‹ซแ‹ฉ แŒแ‰ฅแ‹“แ‰ถแ‰ฝ แˆˆแŠญแˆแˆŽแ‰ฝ แ‹ตแŒ‹แ แŠฅแ‹จแ‰ฐแ‹ฐแˆจแŒˆ แˆ˜แˆ†แŠ‘แŠ• แŒ แ‰…แˆฐแ‹ แ‰ แˆแ‰ฐแŠ“ แŒฃแ‰ขแ‹ซแ‹Žแ‰ฝ แ‰ แ‰‚ แ‹จแŠขแŠ•แ‰ฐแˆญแŠ”แ‰ต แŠ แ‰…แˆญแ‰ฆแ‰ต แŠฅแŠ•แ‹ฒแŠ–แˆญ แŠจแŠขแ‰ตแ‹ฎ แ‰ดแˆŒแŠฎแˆ แŒ‹แˆญ แ‰ แˆ˜แАแŒ‹แŒˆแˆญ แ‹ญแˆฐแˆซแˆ แ‰ฅแˆˆแ‹‹แˆแข

แŠญแˆแˆŽแ‰ฝ แ‰ แ‹šแˆ… แˆ‚แ‹ฐแ‰ต แ‹จแˆšแ‹ซแŒ‹แŒฅแˆ™ แ‰ฝแŒแˆฎแ‰ฝ แŠฅแŠ•แ‹ณแ‹ญแŠ–แˆฉ แ‰ แ‰‚ แŠฎแˆแ’แ‹ฉแ‰ฐแˆญ แฃ แŠ”แ‰ตแ‹ŽแˆญแŠญแŠ“ แŠ แˆ›แˆซแŒญ แ‹จแˆ€แ‹ญแˆ แŠ แ‰…แˆญแ‰ฆแ‰ต แŠฅแŠ•แ‹ฒแŠ–แˆญ แˆแ‹ฉ แ‰ตแŠฉแˆจแ‰ต แˆฐแŒฅแ‰ฐแ‹ แˆ˜แ‹˜แŒ‹แŒ€แ‰ต แŠฅแŠ•แ‹ณแˆˆแ‰ฃแ‰ธแ‹ แŠ แˆณแˆตแ‰ แ‹‹แˆแข แˆˆแ‰ฐแˆ›แˆชแ‹Žแ‰ฝแˆ แ‰ แ‰‚ แˆฅแˆแŒ แŠ“ แˆ˜แˆตแŒ แ‰ต แŠฅแŠ•แ‹ฐแˆšแŒˆแ‰ฃ แŠ แˆตแŒˆแŠ•แ‹แ‰ แ‹‹แˆแข

แŠจแ‹šแˆ แŒ‹แˆญ แ‰ แ‰ฐแ‹ซแ‹ซแ‹˜ แ‹จแŠญแˆแˆแŠ“ แŠจแ‰ฐแˆ› แˆ˜แˆตแ‰ฐแ‹ณแ‹ตแˆฎแ‰ฝ แ‹ญแˆ…แŠ•แŠ• แŠ แ‹แ‰€แ‹ แŠ แˆตแˆแˆ‹แŒŠแ‹แŠ• แ‹ตแŒ‹แ แŠฅแŠ•แ‹ฒแ‹ซแ‹ฐแˆญแŒ‰ แŒ แ‹ญแ‰€แ‹‹แˆแข

แ‰ แ‰ตแˆแˆ…แˆญแ‰ต แˆšแŠ’แˆตแ‰ดแˆญ แ‹จแ‹ฒแŒ…แ‰ณแˆ แ‰ตแˆแˆ…แˆญแ‰ตแŠ“ แŠ แ‹ญแˆฒแ‰ฒ แˆฅแˆซ แŠ แˆตแˆแƒแˆš แ‹˜แˆ‹แˆˆแˆ แŠ แˆฐแ‹ (แ‹ถ/แˆญ) แค แ‰ฐแˆ›แˆชแ‹Žแ‰ฝ แ‹จแˆšแˆˆแˆ›แˆ˜แ‹ฑแ‰ฃแ‰ธแ‹ แˆžแ‹ดแˆ แˆแ‰ฐแŠ“แ‹Žแ‰ฝ แ‰ แ‰ แ‰‚ แˆแŠ”แ‰ณ แ‹จแ‰ฐแŒ‹แŒ แˆ˜แˆ†แŠ‘แŠ• แŒˆแˆแŒธแ‹‹แˆแข

" แ‰ฐแˆ›แˆชแ‹Žแ‰ฝ แŠ แˆตแ‰€แ‹ตแˆ˜แ‹ แŠฅแŠ•แ‹ฒแˆˆแˆ›แˆ˜แ‹ฑแŠ“ แˆฅแˆแŒ แŠ“ แŠฅแŠ•แ‹ฒแ‹ซแŒˆแŠ™ แˆ›แ‹ตแˆจแŒ แ‹ญแŒˆแ‰ฃแˆ " แ‰ฅแˆˆแ‹‹แˆแข

@Exam_Hub_Com
@Exam_Hub_Com
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Qormaaticha guutummaatti oonlaayinii gochuuf deeggarsi galteewwan garaagaraa naannoleef godhamaa akka jiru kaasanii, buufataalee qormaataatti dhiyeessiin intarneetii gahaan akka jiraatuuf Itiyoo-Telekoom waliin tumsaan ni hojjetama jedhaniiru.

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Barattootaaf leenjii gahaa kennuun barbaachisaa taโ€™uus kaasaniiru.

@maths_group11
โค5๐Ÿ”ฅ1
All of the following are the preconditions that needed for a chemical reaction to occur except___________.
Anonymous Quiz
14%
Collisions between reactants
22%
Proper orientation
15%
Activation energy
49%
Temperature
Sodium and calcium react with water to form hydrogen gas and metal hydroxide. Yet calcium reacts at a moderate, whereas sodium reacts so rapidly. Why do these differences occur? This is due to the difference in:
Anonymous Quiz
13%
Temperature
19%
Surface area of the reactants
58%
Nature of the reactants
10%
Concentration of reactants
โค8
A device that transfers electrical energy from one circuit to another, usually with a change of voltage is known as __________.
Anonymous Quiz
31%
Alternating current (a.c.)
15%
Electrical bell
51%
Transformer
2%
Magnetic relays
Lenz's law is the consequence of conservation of:
Anonymous Quiz
25%
Charge
36%
Momentum
9%
Mass
30%
Energy
โค1
๐Ÿ‘1