Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in the following question.
A.standard
B.Asia
C.expand
D.rapid

Find the word which has the underlined part pronounced differently from the others
A.rapidly
B.railway
C.obey
D.populated

Find the word which has the underlined part pronounced differently from the others
A.coastal
B.mountain
C.closed
D.hometown

Find the word which has the underlined part pronounced differently from the others
A.hoping
B.congestion
C.population
D.production

Find the word which has the underlined part pronounced differently from the others
A.design
B.prestigious
C.citizen
D.discrimination

Find the word which has the underlined part pronounced differently from the others
A.high-paying
B.sanitation
C.mindset
D.rise

Find the word which has the underlined part pronounced differently from the others
A.population
B.post-office
C.slower
D.road

Sản phẩm của phản ứng nhiệt phân muối amoni clorua là
A.$ { N _ 2 },HCl $.
B.$ N{ H _ 3 },HCl $.
C.$ N{ H _ 3 },C{ l _ 2 } $.
D.$ { N _ 2 },C{ l _ 2 },{ H _ 2 }O $.

Muối amoni chứa gốc của axit không có tính oxi hóa khi đun nóng, bị phân hủy thành:
A. $ HN{ O _ 3 } $
B. $ { H _ 2 }O $
C. $ N{ H _ 3 } $
D. $ { N _ 2 } $ hoặc oxit của nitơ

Trong thực tế, để làm xốp bánh người ta sử dụng muối amoni nào sau đây?
A.$ N{ H _ 4 }HC{ O _ 3 } $.
B.$ {{(N{ H _ 4 })}_ 2 }C{ r _ 2 }{ O _ 7 } $.
C.$ {{\left( N{ H _ 4 } \right)}_ 2 }SO _ 4 $.
D.$ N{ H _ 4 }Cl $.