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Maths-

General

Easy

Question

If $sin space x plus cosec space x plus tan space y plus cot space y equals 4$ where x and y $element of open parentheses 0 comma pi over 2 close parentheses tan space y over 2$ s a root of the equation

$α^{2} + 2 α + 1 = 0$
$α^{2} + 2 α - 1 = 0$
$2 α^{2} - 2 α - 1 = 0$
$α^{2} - α - 1 = 0$

The correct answer is: $alpha squared plus 2 alpha minus 1 equals 0$

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If $x over y equals fraction numerator cos begin display style space end style A over denominator cos begin display style space end style B end fraction$ then $fraction numerator x tan space A plus y tan space B over denominator x plus y end fraction$ =

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The IUPAC name for

1, chore 4 - methyl 2 - nitro benzene

The IUPAC name for

chemistry-General

1, chore 4 - methyl 2 - nitro benzene

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The IUPAC name of

3, ethyl 4, 4 di methyl he ptane.

The IUPAC name of

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3, ethyl 4, 4 di methyl he ptane.

The IUPAC name of the compound shown below is

3.3 di ethyl pentane

The IUPAC name of the compound shown below is

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3.3 di ethyl pentane

The IUPAC name of the compound

3, 3 dimethyl 1-cyclohexanol

The IUPAC name of the compound

chemistry-General

3, 3 dimethyl 1-cyclohexanol

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$cos space 56 to the power of ring operator plus cos space 58 to the power of ring operator minus cos space 66 to the power of ring operator minus 4 cos space 28 to the power of ring operator cos space 29 to the power of ring operator sin space 33 to the power of ring operator$

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2 - methyl 3 - butanol is wrong

Which of the following compounds has wrong IUPAC name?

chemistry-General

2 - methyl 3 - butanol is wrong

2- chloro 4- methyl 2 - pentene.

chemistry-General

2- chloro 4- methyl 2 - pentene.

parallel

What is the IUPAC name of

1 - chloro 2- methyl 2- meth 1 butane

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1 - chloro 2- methyl 2- meth 1 butane

If $fraction numerator tan space left parenthesis alpha plus beta minus gamma right parenthesis over denominator tan space left parenthesis alpha minus beta plus gamma right parenthesis end fraction equals fraction numerator tan begin display style space end style gamma over denominator tan begin display style space end style beta end fraction left parenthesis beta not equal to gamma right parenthesis$ then $sin space 2 alpha plus sin space 2 beta plus sin space 2 gamma$ =

If $fraction numerator tan space left parenthesis alpha plus beta minus gamma right parenthesis over denominator tan space left parenthesis alpha minus beta plus gamma right parenthesis end fraction equals fraction numerator tan begin display style space end style gamma over denominator tan begin display style space end style beta end fraction left parenthesis beta not equal to gamma right parenthesis$ then $sin space 2 alpha plus sin space 2 beta plus sin space 2 gamma$ =

If $fraction numerator sin cubed space theta minus cos cubed space theta over denominator sin space theta minus cos space theta end fraction minus fraction numerator cos begin display style space end style theta over denominator square root of open parentheses 1 plus cot squared space theta close parentheses end root end fraction$ -2 tan $theta cot space theta equals negative 1 comma theta element of left square bracket 0 comma 2 pi right square bracket$ then

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The reaction (CH₃)₃ C - Br → (CH₃)₃ $stack C with plus on top plus B r to the power of minus end exponent$ is an example of

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chemistry-General

$Na subscript 2 straight B subscript 4 straight O subscript 7 times 10 straight H subscript 2 straight O not stretchy rightwards arrow with straight capital delta on top NaBO subscript 2 plus left parenthesis A right parenthesis plus straight H subscript 2 straight O left parenthesis A right parenthesis plus MnO not stretchy rightwards arrow with straight capital delta on top left parenthesis B right parenthesis$ (A) and (B) are

$Na subscript 2 straight B subscript 4 straight O subscript 7 times 10 straight H subscript 2 straight O not stretchy rightwards arrow with straight capital delta on top NaBO subscript 2 plus left parenthesis A right parenthesis plus straight H subscript 2 straight O left parenthesis A right parenthesis plus MnO not stretchy rightwards arrow with straight capital delta on top left parenthesis B right parenthesis$ (A) and (B) are

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