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Phonetics: Choose the word whose underlined part is pronounced differently:
1. A. tooth B. clothing C. bath D. both
2. A. gather B. monthly C. father D. brother
3. A. though B. thank C. through D. thin
4. A. clip B. give C. twice D. stupid
5. A. studio B. documentary C. cute D. stupid
a)\(Fe+CuSO4-->Cu+FeSO4\)
b) \(n_{Fe}=\frac{1,96}{56}=0,035\left(mol\right)\)
\(m_{CuSO4}=\frac{100.10}{100}=10\left(g\right)\)
\(n_{CuSO4}=\frac{10}{160}=0,0625\left(mol\right)\)
Do \(0,036>0,0625\Leftrightarrow\) \(n_{Fe}< n_{CuSO4}\)
=> CuSO4 dư.Tính theo n chất hết (Fe)
Chất rắn B là Cu
\(n_{Cu}=n_{Fe}=0,035\left(mol\right)\)
\(m_{Cu}=0,035.64=2,24\left(g\right)\)
c) m dd A =\(m_{Fe}+m_{ddCuSO4}-m_{Cu}=1,96+100-2,24=99,72\left(g\right)\)
dd A là FeSO4 và CuSO4 dư
\(n_{FeSO4}=n_{Fe}=0,035\left(mol\right)\)
\(m_{FeSO4}=0,035.152=5,32\left(g\right)\)
\(C\%_{FeSO4}=\frac{5,32}{99,72}.100\%=5,33\%\)
\(n_{CuSO4}=n_{Fe}=0,035\left(mol\right)\)
\(n_{CuSO4}dư=0,0625-0,035=0,0275\left(mol\right)\)
\(m_{CuSO4}dư=0,0275.160=4,4\left(g\right)\)
\(C\%_{CuSO4}dư=\frac{4,4}{99,72}.100\%=4,41\%\)
III. Choose the word whose underlined part is pronounced differently:
1. A. tooth B. clothing C. bath D. both
2. A. gather B. monthly C. father D. brother
3. A. though B. thank C. through D. thin
4. A. clip B. give C. twice D. stupid
5. A. studio B. documentary C. cute D. stupid
II. Choose the word whose underlined part is pronounced differently from the others . 1.A.bicycle B. exciting C. favorite D. widely
2.A. doctor B. opening C. gold D. poscard
3. A. farther B. earth C. both D. marathon
4.A. fear B. repeat C. idea D. really
5.A.hair B. fare C. prepare D. speaker
III. Choose the word whose underlined part is pronounced differently from the others. 1. A. arrived B. watched C. listened D. played
2. A. arrived B. watched C. stopped D. washed
3.A. they B. month C. father D. brother
4.A. ago B. open C. cold D. come
5. A. married B. called C. played D. rented
6. A. started B. worked C. waited D. wanted
IV. Choose the word whose underlined part is pronounced differently from the others 1. A. needed B. liked C. washed D. hoped
2. A. works B. plays C. wants D. stops
3. A. stayed B. listened C. cooked D. played
4.A. brother B. open C. some D. come
5. A. wanted B. excited C. needed D. bored
I. Choose the word whose underlined part is pronounced differently from that of the others.
1. A. bread B. coffee C. meat D. tea
2. A bath B. bathe C. great D. make
3. A. leave B. read C. ready D. week
4. A. hungry B. pupil C. Sunday D. up
5. A. but B. come C. so D. much
I. Choose the word that is different from the rest in each group by circling A, B, C or D.
1. A. ill | B. sick | C. sad | D. unwell |
2. A. doctor | B. nurse | C. dentist | D. teacher |
3. A. tablet | B. chocolate | C. medicine | D. pill |
4. A. virus | B. flu | C. headache | D. stomachache |
5. A. couching | B. sneezing | C. disease | D. runny nose |
I. Choose the word whose underlined part is pronounced differently from that of the others.
1. A. bread B. coffee C. meat D. tea
2. A bath B. bathe C. great D. make
3. A. leave B. read C. ready D. week
4. A. hungry B. pupil C. Sunday D. up
5. A. but B. come C. so D. much
I. Choose the word that is different from the rest in each group by circling A, B, C or D.
1. A. ill | B. sick | C. sad | D. unwell |
2. A. doctor | B. nurse | C. dentist | D. teacher |
3. A. tablet | B. chocolate | C. medicine | D. pill |
4. A. virus | B. flu | C. headache | D. stomachache |
5. A. couching | B. sneezing | C. disease | D. runny nose |
Exercise 1: Choose the word whose underlined part is pronounced differently from that of the others
1. A. them B. thing C. then D. their
2. A. worth B. birthday C. although D. mouthful
3. A. weather B. through C. think D. sixth
4. A. dress B. then C. test D. these
5. A. close B. fold C. cloth D. hold
6. A. woman B. man C. badminton D. relax
7. A. cousin B. mouse C. round D. mountain
8. A. boat B. broad C. coast D. soap
9. A. travel B. marathon C. match D. class
10. A. fair B. chair C. marry D. hair
1B
2B
3A
4C
5B
6A
1B
2B
4C
5B
6A