?

A) $[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}$

B) $[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}$

C) $[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl$

D) $[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]$

• question_answer54) Total volume of atoms present in a face centred cubic unit cell of a metal is (r is atomic radius)

A) $\frac{16}{3}\pi {{r}^{3}}$

B) $\frac{20}{3}\pi {{r}^{3}}$

C) $\frac{24}{3}\pi {{r}^{3}}$

D) $\frac{12}{3}\pi {{r}^{3}}$

• question_answer55) Pure silicon doped with phosphorus is a

A) metallic conductor

B) insulator

C) n-type semiconductor

D) p-type semiconductor

• question_answer56) Neutron is discovered by

B) Rutherford

C) Yukawa

D) Dalton

• question_answer57) What is X in the following nuclear reaction? ${}_{7}{{N}^{14}}+{}_{1}{{H}^{1}}\xrightarrow{{}}{}_{8}{{O}^{15}}+X$

A) ${}_{0}{{n}^{1}}$

B) ${}_{-1}{{e}^{0}}$

C) ${}_{+1}{{e}^{0}}$

D) $\gamma$

• question_answer58) Solubility product of $PbC{{l}_{2}}$ at 298 K is $1\times {{10}^{-6}}.$ At this temperature solubility of $PbC{{l}_{2}}$ in $mol\text{/}L$ is

A) ${{(1\times {{10}^{-6}})}^{1/2}}$

B) ${{(1\times {{10}^{-6}})}^{1/3}}$

C) ${{(0.25\times {{10}^{-6}})}^{1/3}}$

D) ${{(2.5\times {{10}^{-6}})}^{1/2}}$

• question_answer59) The pH of a 0.001 M solution of $HCl$ is

A) 0

B) 3

C) 5

D) 10

• question_answer60) Gold number is associated with

A) amount of gold

B) protective colloids

C) purple of cassius

D) electrophoresis

• question_answer61) Noble gases are used in discharge tubes to give different colours. Reddish-orange glow is due to

A) Ar

B) Ne

C) Xe

D) Kr

• question_answer62) The set representing the correct order for first ionization potential is

A) K > Na > Li

B) Be > Mg > Ca

C) B > C > N

D) Ge > Si > C

A) solid $C{{O}_{2}}$

B) solid camphor

C) solid $S{{O}_{2}}$

D) solid $N{{O}_{2}}$

• question_answer64) Methanol and ethanol are miscible in water due to

A) covalent character

B) hydrogen bonding character

C) oxygen bonding character

D) None of the above

A) configuration

B) conformation

C) they do not differ

D) None of the above

• question_answer66) IUPAC name of the following compound

A) N, N-dimethylcyclopropaine carboxamide

B) N-methylcyclopropanamide

C) cyclopropionamide

D) None of the above

• question_answer67) The product of following reaction is $2C{{H}_{3}}MgBr+C{{H}_{2}}O\xrightarrow{{}}$

A) $C{{H}_{3}}OH$

B) ${{C}_{2}}{{H}_{5}}OH$

C) $C{{H}_{4}}$

D) ${{C}_{2}}{{H}_{6}}$

• question_answer68) Freon used as refrigerant is

A) $C{{F}_{2}}=C{{F}_{2}}$

B) $C{{H}_{2}}{{F}_{2}}$

C) $CC{{l}_{2}}{{F}_{2}}$

D) $C{{F}_{4}}$

A) anhy. $ZnC{{l}_{2}}$ and $N{{H}_{3}}$

B) anhy. $ZnC{{l}_{2}}$ and $CaC{{l}_{2}}$

C) anhy. $ZnC{{l}_{2}}$ and cone. $HCl$

D) anhy. $ZnC{{l}_{2}}$ and $HCl$ gas

• question_answer70) The enzyme which can catalyse the conversion of glucose to ethanol is

A) zymase

B) invertase

C) maltase

D) diastase

• question_answer71) When dihydroxy acetone reacts with $HI{{O}_{4}},$ the product is/are

A) $HCHO$

B) $HCOOH$

C) $HCHO$and$HCOOH$

D) $HCHO$and $C{{O}_{2}}$

• question_answer72) Which of the following does not reduce Fehlings solution?

A) Benzaldehyde

B) Formic acid

C) Glucose

D) Fructose

• question_answer73) Sodium formate on heating gives

A) oxalic acid and ${{H}_{2}}$

B) sodium oxalate and ${{H}_{2}}$

C) sodium oxalate

D) $C{{O}_{2}}$ and caustic soda

• question_answer74) Reaction of ethyl formate with excess of $C{{H}_{3}}MgI$ followed by hydrolysis gives

A) n-propyl alcohol

B) isopropyl alcohol

C) acetaldehyde

D) acetone

• question_answer75) Hydrolysis of phenyl isocyanide forms

A) benzoic acid

B) formic acid

C) acetic acid

D) None of these

• question_answer76) Styrene can be purified by

A) simple distillation

B) fractional distillation

C) steam distillation

D) vacuum distillation

• question_answer77) Which of the following is not reducing sugar?

A) Glucose

B) Fructose

C) Lactose

D) Sucrose

• question_answer78) The monomer of Teflon is

A) $CHF=C{{H}_{2}}$

B) $C{{F}_{2}}=C{{F}_{2}}$

C) $CHCl=CHCl$

D) $CHF=CHCl$

• question_answer79) The hybridisation state of carbon in fullerene is

A) $sp$

B) $s{{p}^{2}}$

C) $s{{p}^{3}}$

D) $s{{p}^{3}}d$

• question_answer80) A fruity smell is produced by the reaction of ${{C}_{2}}{{H}_{5}}OH$ with

A) $C{{H}_{3}}COC{{H}_{3}}$

B) $C{{H}_{3}}COOH$

C) $PC{{l}_{5}}$

D) $C{{H}_{3}}CHO$

• question_answer81) In Whittakers system of classification, prokaryotes belong to the kingdom

A) Monera

B) Protista

C) Animalia

D) Fungi

• question_answer82) Water bloom is generally caused by

A) green algae

B) blue-green algae

C) bacteria

D) Hydrilla

• question_answer83) Which one of the following is a saprophytic bryophyte?

A) Riccia fluitans

B) Buxbaumia aphylla

C) Funaria hygrometrica

D) Sphagnum

A) a single double stranded DNA

B) a single stranded DNA

C) RNA and histones

D) histones and non- histones

• question_answer85) Iodine is obtained from

A) Laminaria

B) Chlorella

C) Polysiphonia

D) Porphyra

• question_answer86) Covered smut of barley is caused by

A) Ustilago hordei

B) Tilletia caries

C) Ustilago nuda

D) Colletotrichum falcatum
