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ECAT Chemistry Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Hemoglobin contains nearly: | 10,000 atoms 100 atoms 1000 atoms 1 atom |
| 2 | Hemoglobin is 68000 times heavier than: |
Oxygen atom Nitrogen atom Carbon atom Hydrogen atom |
| 3 | NH3, HCL, H2O, HL are: | <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Diatomic molecules</span><o:p></o:p></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Poly-atomic molecules</span><o:p></o:p></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Mono-atomic molecules</span><b><o:p></o:p></b></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Heter</span>o atomic molecules<o:p></o:p></p> |
| 4 | He Ar and Ne are: | <span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Mono-atomic molecules</span> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Heter</span>o atomic molecules<o:p></o:p></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Poly-atomic molecules</span><o:p></o:p></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Diatomic molecules</span><o:p></o:p></p> |
| 5 | CL2, N2 and O2 are: | <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Diatomic molecules</span><o:p></o:p></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Heter</span>o atomic molecules<o:p></o:p></p> <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Poly-atomic molecules</span><o:p></o:p></p> <span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Mono-atomic molecules</span> |
| 6 | C6H12O6and C12H22O11 are: | Mono-atomic molecules Diatomic molecules Poly-atomic molecules <p class="MsoNormal"><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Heter</span>o atomic molecules<o:p></o:p></p> |
| 7 | The number of subatomic particles in atoms sidcovered is more than: | 110 100 125 90 |
| 8 | Atoms can be evident by use of electron microscope, field ionization microscope and: | x-rays Video camera<div><br></div> Telescope Compound microscope |
| 9 | Determination of atomic masses and invention of system of writing symbols was made by: | J. Berzelius Democritus Dalton None of above |
| 10 | First atomic theory was put forward by an English school teacher: | Maxewell Newton Sanger John Dalton |
| 11 | Metal tend to lose electrons, becoming: |
<p class="MsoNormal">Metals<o:p></o:p></p> <p class="MsoNormal">Positively charged<o:p></o:p></p> <p class="MsoNormal">Negatively charged<o:p></o:p></p> <p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; line-height: normal;"> (a)</span><span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: "Times New Roman";"></span><!--[endif]-->And (c)<o:p></o:p></p> |
| 12 | Atoms and molecules can either gain or lose electrons, forming charge particles called: | <p class="MsoNormal">Positrons<o:p></o:p></p> <p class="MsoNormal">Photons<o:p></o:p></p> <p class="MsoNormal">Ions<o:p></o:p></p> <p class="MsoNormal">Electrons<o:p></o:p></p> |
| 13 | Covalent compound s mostly exist in the form of: |
<p class="MsoNormal">Protons<o:p></o:p></p> <p class="MsoNormal">Atoms<o:p></o:p></p> <span style="font-size:11.0pt;line-height:107%; font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family: Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi; mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Neutrons</span> <p class="MsoNormal">Molecules<o:p></o:p></p> |
| 14 | The diameter of atoms is of the order: |
2* 10<sup>-5</sup>m <p class="MsoNormal">2* 10<sup>-10 </sup>m<sup><o:p></o:p></sup></p> 2* 10<sup>-2</sup>m 2* 10<sup>-3</sup>m |
| 15 | CO+ is an example of | Stable molecule Anionic molecule ion Cationic molecular ion Free radical |
| 16 | When an electron is added to a uni positive ion we get: | Cation Molecule Neutral atom Anion |
| 17 | The number of atoms present in molecule determines its: | Molecularity Atomicity Basicity Acidity |
| 18 | Matter is defined as any thing which occupies space and: | Molecules Mass Compound Molecules |
| 19 | Smallest particle of an element which may or may not have independent existence is known as: | A molecule An ion An atom An electron |
| 20 | The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as | chesmistry Geology Physics Mechanics |
| 21 | Isotopes differ in | properties which depend upon mass arrangement of electrons in orbitals chemical properties the extent to which they may be affected in electric fields |
| 22 | The tip of the funnel should touch the side of the beaker in order to avoid | Splashing Leakage Mixing Contamination |
| 23 | The tip of funnel should be 1 or 2cm larger than the circle of the | Beaker Solid Filter paper Liquid |
| 24 | The filtration process is used to separate solid from | Liquid Gas Solid All of above |
| 25 | The solid remained on filter paper during filtration is called the | Substance Residue Undue Filtrate |
| 26 | The sample being analyzed is called | Electrolyte Substance Analyte All of above |
| 27 | The detection of functional group is called | Numerical analysis Qualitative analysis Combustion analysis Quantitative analysis |
| 28 | Identification of a substance, determination of its structure and quantitative analysis of its composition are the aspects covered by | Modern analytical physics Mechanical chemistry Biochemistry Modern analytical chemistry |
| 29 | Estimation of Na in sea water is an example of | Numerical analysis Qualitative analysis Quantitative analysis None of above |
| 30 | A complete chemical characterization of a compound must include | Qualitative analysis Chemical analysis Quantitative analysis Both a and c |
