The Value Of Sin Square 10 Plus Sin Square 15
1) 7 2) 8 3) 9 4) 9 1/2 Answer: (4) 9 1/2 Solution: sin25° + sin210° + sin215° +... View Article
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The Least Value Of 2 Sin Square Theta Plus 3 Cos Square Theta Is
1) 1 2) 2 3) 3 4) 5 Answer: (2) 2 Solution: 2 sin2θ + 3 cos2θ Using the identity... View Article
If A B C Pi A B C Greater Than 0 And The Angle C Is Obtuse
1) tan A tan B > 1 2) tan A tan B < 1 3) tan A tan B =... View Article
If A B C 270 Degrees Then Cos 2a Cos 2b Cos 2c 4 Sin A
1) 0 2) 1 3) 2 4) 3 Answer: (2) 1 Solution: Given, A + B + C = 270°….(i)... View Article
If A B C 180 Degrees Then The Value Of Cot A 2 Cot B 2 Cot C 2 Will Be
1) 2 cot A/2 cot B/2 cot C/2 2) 4 cot A/2 cot B/2 cot C/2 3) cot A/2 cot... View Article
Does A Compressed Spring Have More Mass
In terms of weight, whatever object is under it, a compressed spring can weigh more. Its gravity plus the compressive... View Article
Why Are Covalent Bonds Flexible
Covalent compounds tend to be soft and relatively flexible. The exchange of electrons between atoms of the same or different... View Article
Why Is Nacl Not A Molecule
As a molecule, NaCl is not considered. In a chemical element or compound, a molecule is the smallest particle that... View Article
How Are Catalysts Used In Everyday Life
A biological catalyst is an enzyme. To control reactions in cells, enzymes are necessary. In industry, they are also important.... View Article
Why Are Ethers Less Polar Than Alcohols
Ethers are similar in structure to alcohols, and water is similar in structure to both ethers and alcohols. One hydrogen... View Article
Why Do Semiconductors Conduct Electricity At High Temperatures
A semiconductor is a substance that has the conductivity of electricity between a conductor and an insulator. However, heat does... View Article
Is Co2 A Peroxide
CO2 is an oxide or carbon dioxide of carbon(IV). It may not be a peroxide with a lower oxidation state... View Article
Why Is Nitrous Oxide Neutral
Neutral oxides are those oxides which, when they react with water, display either basic or acidic properties. Carbon monoxide and... View Article
What Products Contain Ether
Diethyl ether is simply referred to as “ ether” but was once referred to as sweet vitriol oil. Methyl phenyl ether,... View Article
Is Bao An Acid Or Base
An oxide that reacts with water to form a Bronsted Acid solution is an acidic oxide. Hydroxide aka (OH) ions... View Article
Can Ethers Be Oxidized
It is possible to oxidise the ether with sodium and calcium hypochlorite. However, only symmetrical ethers, such as tetrahydrofuran (THF)... View Article
Which Is More Stable Peroxide Or Superoxide
Peroxide comprises a group of peroxides in which each oxygen atom, usually carbon or hydrogen, is bound to the other... View Article
How Do You Remove Oxidation From Aluminum
If a large aluminium surface is being washed, soak a cloth in vinegar and scrub it through the oxidation process.... View Article
Is Salt A Catalyst
In some reaction, sodium metal is used as a catalyst. A catalyst is a material used without undergoing any alteration... View Article
Why Does Entropy Increase In Irreversible Process
In a reversible process, the entropy of the universe stays unchanged, but in an irreversible (spontaneous) process, the entropy of... View Article
